Company lists · Data refreshed September 2026
Top 25 Cybersecurity consultancies based in London, United Kingdom
RevenueBase identified 1,791 company matches for cybersecurity consultancies associated with London, United Kingdom as of September 2026 and tracks 30,641 professional contacts across them, including 10,321 with verified work emails. Across the United Kingdom, London is the largest hub for this category.
This list covers company matches for cybersecurity consultancies associated with London, 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 24, 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 cybersecurity consultancies based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,972 contacts → | ||||
Exact match “Control Risks is a global specialist risk consultancy that helps to create secure, compliant and resilient organisations.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 2 | 2,304 contacts → | ||||
Exact match “organizations.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 3 | 1,508 contacts → | ||||
Exact match “Noventiq (Noventiq Holdings PLC) is a leading global solutions and services provider in digital transformation and cybersecurity, headquartered in London.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 4 | 919 contacts → | ||||
Exact match “CIS Security is an independent security company equipped to help customers to solve the complex challenges in today’s digital, connected and regulated business world.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 5 | 705 contacts → | ||||
Exact match “Get a free, powerful security assessment with personalised recommendations, the same analysis that costs from IT Consultancies.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 6 | 459 contacts → | ||||
Exact match “Analysys Mason is the leading specialist consultancy, creating lasting value in technology-intensive industries, including telecoms, digital infrastructure, software, IT services…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 7 | 351 contacts → | ||||
Exact match “S-RM is a global intelligence and cyber security consultancy.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 8 | 295 contacts → | ||||
Exact match “At Kocho, we believe greatness lies in everyone.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 9 | 262 contacts → | ||||
Exact match “We’re here to power the ambitions of London enterprises with a dedicated 100Gbps fibre network, managed IT and cybersecurity services.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 10 | 242 contacts → | ||||
Exact match “Obrela Security Industries is a global provider of cyber security services.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 11 | 239 contacts → | ||||
Exact match “With over 18 years of experience in Cyber Security and Compliance, MetaCompliance provides a smart, practical solution for managing human risk.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 12 | 211 contacts → | ||||
Exact match “Netcraft provides powerful phishing detection, cybercrime disruption and website takedown solutions to the world's largest organizations” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 13 | 203 contacts → | ||||
Exact match “Established in 2006, FluidOne is an award-winning provider of secure Connected Cloud Solutions with a £110m turnover and consistently one of the highest Net Promoter Scores (NPS)…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 14 | 190 contacts → | ||||
Exact match “Intragen is a cyber security business focused on managed Identity solutions and services.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 15 | 186 contacts → | ||||
Exact match “IT support for businesses in London.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 16 | 177 contacts → | ||||
Exact match “Whether you’re a business or an individual, digital threats to your precious data and assets can come in any form - external or internal.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 17 | 171 contacts → | ||||
Exact match “Security Blue Team is now Centri.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 18 | 159 contacts → | ||||
Exact match “We are a global advisory company that helps our clients enable their opportunities and manage key risks.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 19 | 134 contacts → | ||||
Exact match “Turnkey Consulting brings together people, protection, and performance to help the world’s leading companies understand and optimize their risk and security landscape.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 20 | 126 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 24, 2026 · View company records in RevenueBase | |||||
| 21 | 123 contacts → | ||||
Exact match “Bulletproof is now part of WorkNest Secure.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 22 | 120 contacts → | ||||
Exact match “As the number one anti-piracy provider, Friend MTS is the trusted cybersecurity partner of the biggest brands in media, sports, and entertainment.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 23 | 120 contacts → | ||||
Exact match “OpticoreIT is an IT Consultancy founded in 2013 to bridge a gap in the market between the major IT services providers and the consultancy market.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 24 | 118 contacts → | ||||
Exact match “PGI helps organisations build digital resilience.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase | |||||
| 25 | 118 contacts → | ||||
Exact match “CREST is an international not-for-profit, membership body representing the global cyber security industry.” Recorded in the RevenueBase company graph · Sep 24, 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 “cybersecurity consultancies”. 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 1,791 cybersecurity consultancies based in London, United Kingdom
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Cybersecurity consultancies based in London, United Kingdom at a glance
As of Sep 24, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 1,791 companies.
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 London, United Kingdom whose business descriptions match “cybersecurity consultancies” 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 10,321 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 24, 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.
Cybersecurity consultancies by metro in the United Kingdom
- Cybersecurity consultancies in Manchester143
- Cybersecurity consultancies in Birmingham71
- Cybersecurity consultancies in Leeds63
- Cybersecurity consultancies in Bristol59
- Cybersecurity consultancies in Cheltenham45
- Cybersecurity consultancies in Reading44
- Cybersecurity consultancies in Cambridge43
- Cybersecurity consultancies in Glasgow40
- Cybersecurity consultancies in Edinburgh38
- Cybersecurity consultancies in Milton Keynes33
- Cybersecurity consultancies in Sheffield30
- Cybersecurity consultancies in Southampton28
- Cybersecurity consultancies in Cardiff27
- Cybersecurity consultancies in Newcastle Upon Tyne25
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 “cybersecurity consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many cybersecurity consultancies are there based in London, United Kingdom?
RevenueBase identified 1,791 company matches for cybersecurity consultancies associated with London, 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?
Control Risks tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United Kingdom has the most cybersecurity consultancies?
London leads the United Kingdom with 1,791 company records, followed by Manchester (143) and Birmingham (71).
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 10,321 professional contacts with verified work emails tracked across these 1,791 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 24, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,791 cybersecurity consultancies based in London, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Cybersecurity consultancies by geography
- Cybersecurity consultancies based in the United States
- Cybersecurity consultancies based in the United Kingdom
- Cybersecurity consultancies based in France
- Cybersecurity consultancies based in Brazil
- Cybersecurity consultancies based in Australia
- Cybersecurity consultancies based in Canada
- Cybersecurity consultancies based in Germany
- Cybersecurity consultancies based in Italy
- Cybersecurity consultancies based in the Netherlands
- Cybersecurity consultancies based in Spain
- Cybersecurity consultancies based in Mexico
- Cybersecurity consultancies based in South Africa
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
- Cybersecurity consultancies based in the United States
- Cybersecurity consultancies based in the United Kingdom
- Cybersecurity consultancies based in France
- Cybersecurity consultancies based in Brazil
- Cybersecurity consultancies based in Australia
- Cybersecurity consultancies based in Canada
Company intelligence · public preview
Top 25 cybersecurity consultancies based in London, 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 1,791 matching company records for cybersecurity consultancies based in London, United Kingdom, with 30,641 tracked contacts and 10,321 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 24, 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 cybersecurity consultancies based in London, 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 |  Control Riskscontrolrisks.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,972 contacts → |
“Control Risks is a global specialist risk consultancy that helps to create secure, compliant and resilient organisations.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Mimecastmimecast.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,304 contacts → |
“organizations.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Noventiqnoventiq.comHQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 1,508 contacts → |
“Noventiq (Noventiq Holdings PLC) is a leading global solutions and services provider in digital transformation and cybersecurity, headquartered in London.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  CIS Security Limitedcis-security.co.ukHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 919 contacts → |
“CIS Security is an independent security company equipped to help customers to solve the complex challenges in today’s digital, connected and regulated business world.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  COBRAaudit.amazingsupport.co.ukHQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 705 contacts → |
“Get a free, powerful security assessment with personalised recommendations, the same analysis that costs from IT Consultancies.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Analysys Masonanalysysmason.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 459 contacts → |
“Analysys Mason is the leading specialist consultancy, creating lasting value in technology-intensive industries, including telecoms, digital infrastructure, software, IT services…” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  S-Rms-rminform.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 351 contacts → |
“S-RM is a global intelligence and cyber security consultancy.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  KOCHOkocho.co.ukHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 295 contacts → |
“At Kocho, we believe greatness lies in everyone.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Vorbossvorboss.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 262 contacts → |
“We’re here to power the ambitions of London enterprises with a dedicated 100Gbps fibre network, managed IT and cybersecurity services.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Obrelaobrela.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 242 contacts → |
“Obrela Security Industries is a global provider of cyber security services.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Metacompliancemetacompliance.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 239 contacts → |
“With over 18 years of experience in Cyber Security and Compliance, MetaCompliance provides a smart, practical solution for managing human risk.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Netcraftnetcraft.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 211 contacts → |
“Netcraft provides powerful phishing detection, cybercrime disruption and website takedown solutions to the world's largest organizations” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Fluidonefluidone.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 203 contacts → |
“Established in 2006, FluidOne is an award-winning provider of secure Connected Cloud Solutions with a £110m turnover and consistently one of the highest Net Promoter Scores (NPS)…” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Intragenintragen.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 190 contacts → |
“Intragen is a cyber security business focused on managed Identity solutions and services.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  operum.techoperum.techHQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 186 contacts → |
“IT support for businesses in London.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Deepcytes Cyber Labs UKdeepcytes.ioHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 177 contacts → |
“Whether you’re a business or an individual, digital threats to your precious data and assets can come in any form - external or internal.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Security Blue Teamcentri.orgHQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 171 contacts → |
“Security Blue Team is now Centri.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  G3g3.coHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 159 contacts → |
“We are a global advisory company that helps our clients enable their opportunities and manage key risks.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Turnkey Consultingturnkeyconsulting.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 134 contacts → |
“Turnkey Consulting brings together people, protection, and performance to help the world’s leading companies understand and optimize their risk and security landscape.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Trpglobaltechriskpartners.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 126 contacts → |
“We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Bulletproof Cyber Securityworknest.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 123 contacts → |
“Bulletproof is now part of WorkNest Secure.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Friend MTSfriendmts.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 120 contacts → |
“As the number one anti-piracy provider, Friend MTS is the trusted cybersecurity partner of the biggest brands in media, sports, and entertainment.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Opticoreitopticoreit.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 120 contacts → |
“OpticoreIT is an IT Consultancy founded in 2013 to bridge a gap in the market between the major IT services providers and the consultancy market.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Protection Group Internationalpgitl.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 118 contacts → |
“PGI helps organisations build digital resilience.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | CRESTcrest-approved.org HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 118 contacts → |
“CREST is an international not-for-profit, membership body representing the global cyber security industry.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,791 company matches
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Cybersecurity consultancies: dataset insights
September 24, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,788 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 1,791 companies.
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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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 24, 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 ↗
Cybersecurity consultancies by metro in the United Kingdom
- Cybersecurity consultancies in Manchester143
- Cybersecurity consultancies in Birmingham71
- Cybersecurity consultancies in Leeds63
- Cybersecurity consultancies in Bristol59
- Cybersecurity consultancies in Cheltenham45
- Cybersecurity consultancies in Reading44
- Cybersecurity consultancies in Cambridge43
- Cybersecurity consultancies in Glasgow40
- Cybersecurity consultancies in Edinburgh38
- Cybersecurity consultancies in Milton Keynes33
- Cybersecurity consultancies in Sheffield30
- Cybersecurity consultancies in Southampton28
- Cybersecurity consultancies in Cardiff27
- Cybersecurity consultancies in Newcastle Upon Tyne25
Questions about this company list
What does Exact match mean for cybersecurity consultancies?
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 cybersecurity consultancies did RevenueBase find based in London, United Kingdom?
The saved snapshot records 1,791 matching company records, 30,641 tracked contacts and 10,321 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 24, 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
Cybersecurity consultancies by geography
- Cybersecurity consultancies based in the United States
- Cybersecurity consultancies based in the United Kingdom
- Cybersecurity consultancies based in France
- Cybersecurity consultancies based in Brazil
- Cybersecurity consultancies based in Australia
- Cybersecurity consultancies based in Canada
- Cybersecurity consultancies based in Germany
- Cybersecurity consultancies based in Italy
- Cybersecurity consultancies based in the Netherlands
- Cybersecurity consultancies based in Spain
- Cybersecurity consultancies based in Mexico
- Cybersecurity consultancies based in South Africa
Cite this list
RevenueBase Data Team. Top 25 cybersecurity consultancies based in London, United Kingdom. Snapshot: September 24, 2026. https://revenuebase.ai/companies/cybersecurity-consultancies/united-kingdom/london.
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
- Cybersecurity consultancies based in the United States
- Cybersecurity consultancies based in the United Kingdom
- Cybersecurity consultancies based in France
- Cybersecurity consultancies based in Brazil
- Cybersecurity consultancies based in Australia
- Cybersecurity consultancies based in Canada
Company intelligence · public preview
Top 25 cybersecurity consultancies based in London, United Kingdom
RevenueBase records 1,791 matching company records for cybersecurity consultancies based in London, United Kingdom, with 30,641 tracked contacts and 10,321 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 24, 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 cybersecurity consultancies based in London, 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 | Control Riskscontrolrisks.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,972 contacts → |
“Control Risks is a global specialist risk consultancy that helps to create secure, compliant and resilient organisations.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Mimecastmimecast.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,304 contacts → |
“organizations.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Noventiqnoventiq.com HQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 1,508 contacts → |
“Noventiq (Noventiq Holdings PLC) is a leading global solutions and services provider in digital transformation and cybersecurity, headquartered in London.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | CIS Security Limitedcis-security.co.uk HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 919 contacts → |
“CIS Security is an independent security company equipped to help customers to solve the complex challenges in today’s digital, connected and regulated business world.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | COBRAaudit.amazingsupport.co.uk HQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 705 contacts → |
“Get a free, powerful security assessment with personalised recommendations, the same analysis that costs from IT Consultancies.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Analysys Masonanalysysmason.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 459 contacts → |
“Analysys Mason is the leading specialist consultancy, creating lasting value in technology-intensive industries, including telecoms, digital infrastructure, software, IT services…” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | S-Rms-rminform.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 351 contacts → |
“S-RM is a global intelligence and cyber security consultancy.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | KOCHOkocho.co.uk HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 295 contacts → |
“At Kocho, we believe greatness lies in everyone.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Vorbossvorboss.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 262 contacts → |
“We’re here to power the ambitions of London enterprises with a dedicated 100Gbps fibre network, managed IT and cybersecurity services.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Obrelaobrela.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 242 contacts → |
“Obrela Security Industries is a global provider of cyber security services.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Metacompliancemetacompliance.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 239 contacts → |
“With over 18 years of experience in Cyber Security and Compliance, MetaCompliance provides a smart, practical solution for managing human risk.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Netcraftnetcraft.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 211 contacts → |
“Netcraft provides powerful phishing detection, cybercrime disruption and website takedown solutions to the world's largest organizations” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Fluidonefluidone.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 203 contacts → |
“Established in 2006, FluidOne is an award-winning provider of secure Connected Cloud Solutions with a £110m turnover and consistently one of the highest Net Promoter Scores (NPS)…” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Intragenintragen.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 190 contacts → |
“Intragen is a cyber security business focused on managed Identity solutions and services.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | operum.techoperum.tech HQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 186 contacts → |
“IT support for businesses in London.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Deepcytes Cyber Labs UKdeepcytes.io HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 177 contacts → |
“Whether you’re a business or an individual, digital threats to your precious data and assets can come in any form - external or internal.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Security Blue Teamcentri.org HQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 171 contacts → |
“Security Blue Team is now Centri.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | G3g3.co HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 159 contacts → |
“We are a global advisory company that helps our clients enable their opportunities and manage key risks.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Turnkey Consultingturnkeyconsulting.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 134 contacts → |
“Turnkey Consulting brings together people, protection, and performance to help the world’s leading companies understand and optimize their risk and security landscape.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Trpglobaltechriskpartners.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 126 contacts → |
“We are TRPGLOBAL, your strategic partner in helping you with the complexities of risk management.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Bulletproof Cyber Securityworknest.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 123 contacts → |
“Bulletproof is now part of WorkNest Secure.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Friend MTSfriendmts.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 120 contacts → |
“As the number one anti-piracy provider, Friend MTS is the trusted cybersecurity partner of the biggest brands in media, sports, and entertainment.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Opticoreitopticoreit.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 120 contacts → |
“OpticoreIT is an IT Consultancy founded in 2013 to bridge a gap in the market between the major IT services providers and the consultancy market.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Protection Group Internationalpgitl.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 118 contacts → |
“PGI helps organisations build digital resilience.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | CRESTcrest-approved.org HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 118 contacts → |
“CREST is an international not-for-profit, membership body representing the global cyber security industry.” Recorded description excerpt · September 24, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,791 company matches
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Cybersecurity consultancies: dataset insights
September 24, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,788 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 1,791 companies.
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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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 24, 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 ↗
Cybersecurity consultancies by metro in the United Kingdom
- Cybersecurity consultancies in Manchester143
- Cybersecurity consultancies in Birmingham71
- Cybersecurity consultancies in Leeds63
- Cybersecurity consultancies in Bristol59
- Cybersecurity consultancies in Cheltenham45
- Cybersecurity consultancies in Reading44
- Cybersecurity consultancies in Cambridge43
- Cybersecurity consultancies in Glasgow40
- Cybersecurity consultancies in Edinburgh38
- Cybersecurity consultancies in Milton Keynes33
- Cybersecurity consultancies in Sheffield30
- Cybersecurity consultancies in Southampton28
- Cybersecurity consultancies in Cardiff27
- Cybersecurity consultancies in Newcastle Upon Tyne25
Questions about this company list
What does Exact match mean for cybersecurity consultancies?
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 cybersecurity consultancies did RevenueBase find based in London, United Kingdom?
The saved snapshot records 1,791 matching company records, 30,641 tracked contacts and 10,321 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 24, 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
Cybersecurity consultancies by geography
- Cybersecurity consultancies based in the United States
- Cybersecurity consultancies based in the United Kingdom
- Cybersecurity consultancies based in France
- Cybersecurity consultancies based in Brazil
- Cybersecurity consultancies based in Australia
- Cybersecurity consultancies based in Canada
- Cybersecurity consultancies based in Germany
- Cybersecurity consultancies based in Italy
- Cybersecurity consultancies based in the Netherlands
- Cybersecurity consultancies based in Spain
- Cybersecurity consultancies based in Mexico
- Cybersecurity consultancies based in South Africa
Cite this list
RevenueBase Data Team. Top 25 cybersecurity consultancies based in London, United Kingdom. Snapshot: September 24, 2026. https://revenuebase.ai/companies/cybersecurity-consultancies/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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