Company lists · Data refreshed September 2026
Top 25 Data security consulting firms based in the United Kingdom
RevenueBase identified 1,194 company matches for data security consulting firms associated with the United Kingdom as of September 2026 and tracks 9,824 professional contacts across them, including 2,984 with verified work emails and 549 with mobile numbers. London is the largest hub.
This list covers company matches for data security consulting firms associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 1, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest data security consulting firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 739 contacts → | ||||
Exact match “SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 2 | 387 contacts → | ||||
Exact match “At Resillion, we're more than just a global leader in quality engineering, testing, and cyber security – we're your dedicated partner from the start of your project to its…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 3 | 183 contacts → | ||||
Exact match “For over 16 years, iBridge has helped many organizations in the legal, healthcare, manufacturing, utilities, financial, and education industries apply the latest technologies to…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 4 | 169 contacts → | ||||
Exact match “Ensuring your business is handling cyber security risks effectively has never been more important.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 5 | 165 contacts → | ||||
Exact match “Sapphire delivers comprehensive cyber solutions tailored to your needs, spanning across consultancy, managed services, IT/OT and beyond.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 6 | 160 contacts → | ||||
Exact match “At Cyberfort we are passionate about the cyber security services we deliver for our customers which keeps their people, data, systems and technology infrastructure secure…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 7 | 141 contacts → | ||||
Exact match “CyberSec Consulting, headquartered in the UAE and serving the iMETA market, is a distinguished professional Cyber Security and Consulting services company.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 8 | 123 contacts → | ||||
Exact match “We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 9 | 118 contacts → | ||||
Exact match “Bulletproof is now part of WorkNest Secure.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 10 | 99 contacts → | ||||
Exact match “CyberSRC® is a CERT-in empanelled award winning organization, positioned to provide cyber security, data protection and assurance services with integrated security solutions…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 11 | 97 contacts → | ||||
Exact match “As an independent IT security specialist, Caretower provide comprehensive solutions to individual problems, thus allowing our recommendations to be unbiased.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 12 | 87 contacts → | ||||
Exact match “ITC Secure is an advisory-led cyber security services company.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 13 | 85 contacts → | ||||
Exact match “Solutions | Testing | Knowledge Helping You Protect Your Business From Cyber Attackers Your security and compliance partner, delivering trust worldwide Cognisys are your trusted…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 14 | 80 contacts → | ||||
Exact match “At Reliance Cyber, we believe in truly partnering with our customers.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 15 | 80 contacts → | ||||
Exact match “Established in 2005, URM Consulting is a specialist provider of cyber and information security consultancy, training, and assurance services.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 16 | 73 contacts → | ||||
Exact match “Saepio increase awareness, reduce risk and improve security in a continually evolving threat landscape.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 17 | 61 contacts → | ||||
Exact match “Many organisations are dealing with multiple frameworks, overlapping tools, disconnected ownership, and increasing pressure from regulators, customers, and boards.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 18 | 61 contacts → | ||||
Exact match “We provide deep expertise with technical and business specialists to help clients secure and protect the UK.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 19 | 60 contacts → | ||||
Exact match “In today’s advanced, interconnected world, protecting the infrastructure that allows society to function is crucial.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 20 | 56 contacts → | ||||
Exact match “CyberLab is the UK-leading cyber security consultancy and managed services provider, trusted by over 1,200 enterprise businesses, government departments, and household names to…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 21 | 52 contacts → | ||||
Exact match “At Hexegic we are not just passionate about protecting data through our Cyber services we are passionate about helping companies release the potential of the data they hold…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 22 | 47 contacts → | ||||
Exact match “In today’s complex threat environment, businesses, individuals, and organisations require trusted partners to provide the ultimate assurance that their assets are well protected.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 23 | 44 contacts → | ||||
Exact match “CornerStone is an award winning, independent, security and digital building consulting firm with headquarters in the UK.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 24 | 42 contacts → | ||||
Exact match “Mitigo Group keeps professional services firms safe from cyberattack and operationally resilient.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 25 | 39 contacts → | ||||
Exact match “Lowers & Associates (L&A) is an independent and internationally recognized risk management consulting firm.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “data security consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 1,194 data security consulting firms based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 2,984 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Data security consulting firms based in the United Kingdom at a glance
As of Sep 1, 2026Companies by employee count
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United Kingdom whose business descriptions match “data security consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 2,984 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 1, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Data security consulting firms by metro
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “data security consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many data security consulting firms are there based in the United Kingdom?
RevenueBase identified 1,194 company matches for data security consulting firms associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
SISA tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most data security consulting firms?
London leads with 449 company records, followed by Manchester (40) and Birmingham (24).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,984 professional contacts with verified work emails tracked across these 1,194 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,194 data security consulting firms based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Data security consulting firms by geography
- Data security consulting firms based in the United States
- Data security consulting firms based in Germany
- Data security consulting firms based in Brazil
- Data security consulting firms based in France
- Data security consulting firms based in Canada
- Data security consulting firms based in Australia
- Data security consulting firms based in Spain
- Data security consulting firms based in the Netherlands
- Data security consulting firms based in Italy
- Data security consulting firms based in Mexico
- Data security consulting firms based in Switzerland
- Data security consulting firms based in Poland
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Data security consulting firms based in the United States
- Data security consulting firms based in Germany
- Data security consulting firms based in Brazil
- Data security consulting firms based in France
- Data security consulting firms based in Canada
- Data security consulting firms based in Australia
Company intelligence · public preview
Top 25 data security consulting firms based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,194 matching company records for data security consulting firms based in the United Kingdom, with 9,824 tracked contacts and 2,984 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 1, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 data security consulting firms based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  SISAsisa.aiHQ: HQ not recorded; location: Leicester, United KingdomReported employees: 201-500 | HQ not recorded; location: Leicester, United Kingdom | 201-500 | Exact match | 739 contacts → |
“SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Resillionresillion.comHQ: HQ not recorded; location: Glasgow, United KingdomReported employees: 501-1,000 | HQ not recorded; location: Glasgow, United Kingdom | 501-1,000 | Exact match | 387 contacts → |
“At Resillion, we're more than just a global leader in quality engineering, testing, and cyber security – we're your dedicated partner from the start of your project to its…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Ibridge, LLCibridgellc.comHQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 183 contacts → |
“For over 16 years, iBridge has helped many organizations in the legal, healthcare, manufacturing, utilities, financial, and education industries apply the latest technologies to…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Risk Associates - Emea & Asiariskassociates.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 169 contacts → |
“Ensuring your business is handling cyber security risks effectively has never been more important.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Sapphiresapphire.netHQ: HQ not recorded; location: Newcastle Upon Tyne, United KingdomReported employees: 51-200 | HQ not recorded; location: Newcastle Upon Tyne, United Kingdom | 51-200 | Exact match | 165 contacts → |
“Sapphire delivers comprehensive cyber solutions tailored to your needs, spanning across consultancy, managed services, IT/OT and beyond.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Cyberfortcyberfortgroup.comHQ: HQ not recorded; location: Thatcham, United KingdomReported employees: 51-200 | HQ not recorded; location: Thatcham, United Kingdom | 51-200 | Exact match | 160 contacts → |
“At Cyberfort we are passionate about the cyber security services we deliver for our customers which keeps their people, data, systems and technology infrastructure secure…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Cybersec Consultingcybersecit.netHQ: HQ not recorded; location: London, United KingdomReported employees: 201-500 | HQ not recorded; location: London, United Kingdom | 201-500 | Exact match | 141 contacts → |
“CyberSec Consulting, headquartered in the UAE and serving the iMETA market, is a distinguished professional Cyber Security and Consulting services company.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Trpglobaltechriskpartners.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 123 contacts → |
“We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Bulletproof Cyber Securityworknest.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 118 contacts → |
“Bulletproof is now part of WorkNest Secure.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Cybersrc Consultancycybersrcc.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 99 contacts → |
“CyberSRC® is a CERT-in empanelled award winning organization, positioned to provide cyber security, data protection and assurance services with integrated security solutions…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Caretower An Integrity360 Companyintegrity360.comHQ: HQ not recorded; location: London, United KingdomReported employees: 201-500 | HQ not recorded; location: London, United Kingdom | 201-500 | Exact match | 97 contacts → |
“As an independent IT security specialist, Caretower provide comprehensive solutions to individual problems, thus allowing our recommendations to be unbiased.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  ITC Secureitcsecure.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 87 contacts → |
“ITC Secure is an advisory-led cyber security services company.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Cognisyscognisys.co.ukHQ: HQ not recorded; location: Leeds, United KingdomReported employees: 51-200 | HQ not recorded; location: Leeds, United Kingdom | 51-200 | Exact match | 85 contacts → |
“Solutions | Testing | Knowledge Helping You Protect Your Business From Cyber Attackers Your security and compliance partner, delivering trust worldwide Cognisys are your trusted…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Reliance Cyberreliancecyber.comHQ: HQ not recorded; location: Waterloo, United KingdomReported employees: 51-200 | HQ not recorded; location: Waterloo, United Kingdom | 51-200 | Exact match | 80 contacts → |
“At Reliance Cyber, we believe in truly partnering with our customers.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  URMurmconsulting.comHQ: HQ not recorded; location: Reading, United KingdomReported employees: 51-200 | HQ not recorded; location: Reading, United Kingdom | 51-200 | Exact match | 80 contacts → |
“Established in 2005, URM Consulting is a specialist provider of cyber and information security consultancy, training, and assurance services.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Saepio Information Securitysaepio.co.ukHQ: HQ not recorded; location: High Wycombe, United KingdomReported employees: 51-200 | HQ not recorded; location: High Wycombe, United Kingdom | 51-200 | Exact match | 73 contacts → |
“Saepio increase awareness, reduce risk and improve security in a continually evolving threat landscape.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Evalianevalian.co.ukHQ: HQ not recorded; location: Worcester, United KingdomReported employees: 51-200 | HQ not recorded; location: Worcester, United Kingdom | 51-200 | Exact match | 61 contacts → |
“Many organisations are dealing with multiple frameworks, overlapping tools, disconnected ownership, and increasing pressure from regulators, customers, and boards.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Dainttadaintta.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 61 contacts → |
“We provide deep expertise with technical and business specialists to help clients secure and protect the UK.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | SQR Group Security Solutions LTDsqrgroup.com HQ: HQ not recorded; location: Barnet, United KingdomReported employees: 501-1,000 | HQ not recorded; location: Barnet, United Kingdom | 501-1,000 | Exact match | 60 contacts → |
“In today’s advanced, interconnected world, protecting the infrastructure that allows society to function is crucial.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Cyberlabcyberlab.co.ukHQ: HQ not recorded; location: Lincoln, United KingdomReported employees: 51-200 | HQ not recorded; location: Lincoln, United Kingdom | 51-200 | Exact match | 56 contacts → |
“CyberLab is the UK-leading cyber security consultancy and managed services provider, trusted by over 1,200 enterprise businesses, government departments, and household names to…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Hexegichexegic.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 52 contacts → |
“At Hexegic we are not just passionate about protecting data through our Cyber services we are passionate about helping companies release the potential of the data they hold…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Frankton Group LTDfranktongroup.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 47 contacts → |
“In today’s complex threat environment, businesses, individuals, and organisations require trusted partners to provide the ultimate assurance that their assets are well protected.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Cornerstonecornerstonegrg.co.ukHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 44 contacts → |
“CornerStone is an award winning, independent, security and digital building consulting firm with headquarters in the UK.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Mitigo Groupmitigogroup.comHQ: HQ not recorded; location: Cheadle, United KingdomReported employees: 51-200 | HQ not recorded; location: Cheadle, United Kingdom | 51-200 | Exact match | 42 contacts → |
“Mitigo Group keeps professional services firms safe from cyberattack and operationally resilient.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Lowers & Associateslowersrisk.comHQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 39 contacts → |
“Lowers & Associates (L&A) is an independent and internationally recognized risk management consulting firm.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,194 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Data security consulting firms: dataset insights
September 1, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
1,183 records in the displayed employee bands.
11 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 1, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Data security consulting firms by metro
Questions about this company list
What does Exact match mean for data security consulting firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many data security consulting firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 1,194 matching company records, 9,824 tracked contacts and 2,984 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 1, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Data security consulting firms by geography
- Data security consulting firms based in the United States
- Data security consulting firms based in Germany
- Data security consulting firms based in Brazil
- Data security consulting firms based in France
- Data security consulting firms based in Canada
- Data security consulting firms based in Australia
- Data security consulting firms based in Spain
- Data security consulting firms based in the Netherlands
- Data security consulting firms based in Italy
- Data security consulting firms based in Mexico
- Data security consulting firms based in Switzerland
- Data security consulting firms based in Poland
Cite this list
RevenueBase Data Team. Top 25 data security consulting firms based in the United Kingdom. Snapshot: September 1, 2026. https://revenuebase.ai/companies/data-security-consulting-firms/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Data security consulting firms based in the United States
- Data security consulting firms based in Germany
- Data security consulting firms based in Brazil
- Data security consulting firms based in France
- Data security consulting firms based in Canada
- Data security consulting firms based in Australia
Company intelligence · public preview
Top 25 data security consulting firms based in the United Kingdom
RevenueBase records 1,194 matching company records for data security consulting firms based in the United Kingdom, with 9,824 tracked contacts and 2,984 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 1, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 data security consulting firms based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | SISAsisa.ai HQ: HQ not recorded; location: Leicester, United KingdomReported employees: 201-500 | HQ not recorded; location: Leicester, United Kingdom | 201-500 | Exact match | 739 contacts → |
“SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Resillionresillion.com HQ: HQ not recorded; location: Glasgow, United KingdomReported employees: 501-1,000 | HQ not recorded; location: Glasgow, United Kingdom | 501-1,000 | Exact match | 387 contacts → |
“At Resillion, we're more than just a global leader in quality engineering, testing, and cyber security – we're your dedicated partner from the start of your project to its…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Ibridge, LLCibridgellc.com HQ: HQ not recorded; location: London, United KingdomReported employees: 501-1,000 | HQ not recorded; location: London, United Kingdom | 501-1,000 | Exact match | 183 contacts → |
“For over 16 years, iBridge has helped many organizations in the legal, healthcare, manufacturing, utilities, financial, and education industries apply the latest technologies to…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Risk Associates - Emea & Asiariskassociates.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 169 contacts → |
“Ensuring your business is handling cyber security risks effectively has never been more important.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Sapphiresapphire.net HQ: HQ not recorded; location: Newcastle Upon Tyne, United KingdomReported employees: 51-200 | HQ not recorded; location: Newcastle Upon Tyne, United Kingdom | 51-200 | Exact match | 165 contacts → |
“Sapphire delivers comprehensive cyber solutions tailored to your needs, spanning across consultancy, managed services, IT/OT and beyond.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Cyberfortcyberfortgroup.com HQ: HQ not recorded; location: Thatcham, United KingdomReported employees: 51-200 | HQ not recorded; location: Thatcham, United Kingdom | 51-200 | Exact match | 160 contacts → |
“At Cyberfort we are passionate about the cyber security services we deliver for our customers which keeps their people, data, systems and technology infrastructure secure…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Cybersec Consultingcybersecit.net HQ: HQ not recorded; location: London, United KingdomReported employees: 201-500 | HQ not recorded; location: London, United Kingdom | 201-500 | Exact match | 141 contacts → |
“CyberSec Consulting, headquartered in the UAE and serving the iMETA market, is a distinguished professional Cyber Security and Consulting services company.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Trpglobaltechriskpartners.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 123 contacts → |
“We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Bulletproof Cyber Securityworknest.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 118 contacts → |
“Bulletproof is now part of WorkNest Secure.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Cybersrc Consultancycybersrcc.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 99 contacts → |
“CyberSRC® is a CERT-in empanelled award winning organization, positioned to provide cyber security, data protection and assurance services with integrated security solutions…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Caretower An Integrity360 Companyintegrity360.com HQ: HQ not recorded; location: London, United KingdomReported employees: 201-500 | HQ not recorded; location: London, United Kingdom | 201-500 | Exact match | 97 contacts → |
“As an independent IT security specialist, Caretower provide comprehensive solutions to individual problems, thus allowing our recommendations to be unbiased.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | ITC Secureitcsecure.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 87 contacts → |
“ITC Secure is an advisory-led cyber security services company.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Cognisyscognisys.co.uk HQ: HQ not recorded; location: Leeds, United KingdomReported employees: 51-200 | HQ not recorded; location: Leeds, United Kingdom | 51-200 | Exact match | 85 contacts → |
“Solutions | Testing | Knowledge Helping You Protect Your Business From Cyber Attackers Your security and compliance partner, delivering trust worldwide Cognisys are your trusted…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Reliance Cyberreliancecyber.com HQ: HQ not recorded; location: Waterloo, United KingdomReported employees: 51-200 | HQ not recorded; location: Waterloo, United Kingdom | 51-200 | Exact match | 80 contacts → |
“At Reliance Cyber, we believe in truly partnering with our customers.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | URMurmconsulting.com HQ: HQ not recorded; location: Reading, United KingdomReported employees: 51-200 | HQ not recorded; location: Reading, United Kingdom | 51-200 | Exact match | 80 contacts → |
“Established in 2005, URM Consulting is a specialist provider of cyber and information security consultancy, training, and assurance services.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Saepio Information Securitysaepio.co.uk HQ: HQ not recorded; location: High Wycombe, United KingdomReported employees: 51-200 | HQ not recorded; location: High Wycombe, United Kingdom | 51-200 | Exact match | 73 contacts → |
“Saepio increase awareness, reduce risk and improve security in a continually evolving threat landscape.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Evalianevalian.co.uk HQ: HQ not recorded; location: Worcester, United KingdomReported employees: 51-200 | HQ not recorded; location: Worcester, United Kingdom | 51-200 | Exact match | 61 contacts → |
“Many organisations are dealing with multiple frameworks, overlapping tools, disconnected ownership, and increasing pressure from regulators, customers, and boards.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Dainttadaintta.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 61 contacts → |
“We provide deep expertise with technical and business specialists to help clients secure and protect the UK.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | SQR Group Security Solutions LTDsqrgroup.com HQ: HQ not recorded; location: Barnet, United KingdomReported employees: 501-1,000 | HQ not recorded; location: Barnet, United Kingdom | 501-1,000 | Exact match | 60 contacts → |
“In today’s advanced, interconnected world, protecting the infrastructure that allows society to function is crucial.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Cyberlabcyberlab.co.uk HQ: HQ not recorded; location: Lincoln, United KingdomReported employees: 51-200 | HQ not recorded; location: Lincoln, United Kingdom | 51-200 | Exact match | 56 contacts → |
“CyberLab is the UK-leading cyber security consultancy and managed services provider, trusted by over 1,200 enterprise businesses, government departments, and household names to…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Hexegichexegic.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 52 contacts → |
“At Hexegic we are not just passionate about protecting data through our Cyber services we are passionate about helping companies release the potential of the data they hold…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Frankton Group LTDfranktongroup.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 47 contacts → |
“In today’s complex threat environment, businesses, individuals, and organisations require trusted partners to provide the ultimate assurance that their assets are well protected.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Cornerstonecornerstonegrg.co.uk HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 44 contacts → |
“CornerStone is an award winning, independent, security and digital building consulting firm with headquarters in the UK.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Mitigo Groupmitigogroup.com HQ: HQ not recorded; location: Cheadle, United KingdomReported employees: 51-200 | HQ not recorded; location: Cheadle, United Kingdom | 51-200 | Exact match | 42 contacts → |
“Mitigo Group keeps professional services firms safe from cyberattack and operationally resilient.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Lowers & Associateslowersrisk.com HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 39 contacts → |
“Lowers & Associates (L&A) is an independent and internationally recognized risk management consulting firm.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,194 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Data security consulting firms: dataset insights
September 1, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
1,183 records in the displayed employee bands.
11 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 1, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Data security consulting firms by metro
Questions about this company list
What does Exact match mean for data security consulting firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many data security consulting firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 1,194 matching company records, 9,824 tracked contacts and 2,984 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 1, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Data security consulting firms by geography
- Data security consulting firms based in the United States
- Data security consulting firms based in Germany
- Data security consulting firms based in Brazil
- Data security consulting firms based in France
- Data security consulting firms based in Canada
- Data security consulting firms based in Australia
- Data security consulting firms based in Spain
- Data security consulting firms based in the Netherlands
- Data security consulting firms based in Italy
- Data security consulting firms based in Mexico
- Data security consulting firms based in Switzerland
- Data security consulting firms based in Poland
Cite this list
RevenueBase Data Team. Top 25 data security consulting firms based in the United Kingdom. Snapshot: September 1, 2026. https://revenuebase.ai/companies/data-security-consulting-firms/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Data security consulting firms based in the United States
- Data security consulting firms based in Germany
- Data security consulting firms based in Brazil
- Data security consulting firms based in France
- Data security consulting firms based in Canada
- Data security consulting firms based in Australia