Company lists · Data refreshed September 2026
Top 25 Security consultancies based in Bristol, United Kingdom
RevenueBase identified 65 company matches for security consultancies associated with Bristol, United Kingdom as of September 2026 and tracks 592 professional contacts across them, including 220 with verified work emails. Across the United Kingdom, London is the largest hub for this category (1,559 companies); Bristol has 65.
This list covers company matches for security consultancies associated with Bristol, 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 21, 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 security consultancies based in Bristol, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 63 contacts → | ||||
Exact match “From our offices in London, Bristol, and Manchester, Stripe OLT delivers cutting-edge cyber security and IT services to support and protect organisations in an ever-changing…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 2 | 51 contacts → | ||||
Exact match “EMSEC is an innovative research company founded in the United Kingdom with offices across India with an intention to provide services and products related to security research…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 3 | 24 contacts → | ||||
Exact match “i3Secure is a cyber security and information assurance consultancy protecting the confidentiality, integrity and availability of data across defence, public and private sectors.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 4 | 22 contacts → | ||||
Exact match “Infinity Systems Engineering LTD is a Bristol based Engineering Consultancy specialising in Systems and Safety Engineering.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 22 contacts → | ||||
Exact match “Since 2003, Prime has been and continues to be at the forefront when it comes to the provision of operational security support and safety training.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 6 | 15 contacts → | ||||
Exact match “On Site Security ltd is a leading provider of security services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 14 contacts → | ||||
Exact match “Astron offers a comprehensive design, installation and maintenance service for fire alarms, CCTV, intruder alarms, access control, emergency lights and fire extinguishers, as well…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 13 contacts → | ||||
Exact match “KIS Fire & Security is the South West’s premier Fire and Security Systems company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 9 | 12 contacts → | ||||
Exact match “Astra Security Ltd works in partnership with you to help you secure your business.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 11 contacts → | ||||
Exact match “Navos are specialists in technology solutions, founded by the ex-CIO of Hargreaves Lansdown David Davies.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 11 | 9 contacts → | ||||
Exact match “Design, installation and commissioning of Fire and Security systems.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 7 contacts → | ||||
Exact match “Independent Specialists in Fire Detection Systems, Life Safety Systems, Intruder Alarm Systems, Access Control Systems & CCTV Systems.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 7 contacts → | ||||
Exact match “TP Group is a leading defence and security Consultancy, with extensive expertise within Science and Technology.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 14 | 5 contacts → | ||||
Exact match “Comera Group brings together specialist businesses across four areas: Defence Training & Operations, Intelligence & Autonomous Systems, Energy & Resilience, and Human Performance.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 4 contacts → | ||||
Exact match “Your crowd safety specialists.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 16 | 3 contacts → | ||||
Exact match “Who we are Security Group is based in Bristol and operates here and in Bath, the Forest of Dean, Chepstow, Clevedon and Trowbridge.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 17 | 3 contacts → | ||||
Exact match “MathEmbedded is an independent, privately-owned company that specialises in providing expert embedded software consultancy, security, development and training services to a global…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 18 | 3 contacts → | ||||
Exact match “CCTV & Access Control specialists.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 19 | 2 contacts → | ||||
Exact match “Bristol Risk Solutions is passionate about helping businesses of all shapes and sizes find solutions to a wide range of risks such as business continuity, disaster recovery, cyber…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 20 | 2 contacts → | ||||
Exact match “Cobalt Consultancy provides security, risk management and training services to individuals, organisations and government depts.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 21 | 1 contacts → | ||||
Exact match “The Building Safety Group are health and safety consultants to the construction industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 22 | 1 contacts → | ||||
Exact match “Anshin is a consulting company operating in the Accountancy Sector in the UK.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 23 | 1 contacts → | ||||
Exact match “Gladstone Fire is your go-to Partner in achieving Fire Safety Compliance.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 24 | 1 contacts → | ||||
Exact match “If you're a marketing leader at a growing cybersecurity vendor or MSSP, you probably struggle to- Articulate the value you provide in a way that resonates with prospects -…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 25 | 1 contacts → | ||||
Exact match “Thorne Security specialise in Bristol Safes, Security Doors, Steel Doors, Security, Window and Door Protection, Security Counters, Perimeter Fencing and CCTV.” Recorded in the RevenueBase company graph · Sep 21, 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 “security 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 65 security consultancies based in Bristol, United Kingdom
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Security consultancies based in Bristol, United Kingdom at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than for Bristol, so it is reported there. Company counts and contact totals on this page are exact for Bristol, over 65 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 Bristol, United Kingdom whose business descriptions match “security 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 220 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 21, 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.
Security consultancies by metro in the United Kingdom
- Security consultancies in London1559
- Security consultancies in Manchester132
- Security consultancies in Birmingham101
- Security consultancies in Leeds70
- Security consultancies in Glasgow59
- Security consultancies in Liverpool49
- Security consultancies in Reading44
- Security consultancies in Cardiff41
- Security consultancies in Edinburgh38
- Security consultancies in Nottingham34
- Security consultancies in Cambridge33
- Security consultancies in Northampton31
- Security consultancies in Belfast30
- Security consultancies in Leicester30
- Security consultancies in Southampton30
- Security consultancies in Swindon30
- Security consultancies in Cheltenham29
- Security consultancies in Peterborough28
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 “security consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many security consultancies are there based in Bristol, United Kingdom?
RevenueBase identified 65 company matches for security consultancies associated with Bristol, 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?
Stripe OLT 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 security consultancies?
London leads the United Kingdom with 1,559 company records, followed by Manchester (132) and Birmingham (101). Bristol has 65.
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 220 professional contacts with verified work emails tracked across these 65 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 65 security consultancies based in Bristol, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Security consultancies by geography
- Security consultancies based in Buenos Aires, Argentina
- Security consultancies based in Adelaide, Australia
- Security consultancies based in Brisbane, Australia
- Security consultancies based in Canberra, Australia
- Security consultancies based in Melbourne, Australia
- Security consultancies based in Perth, Australia
- Security consultancies based in Sydney, Australia
- Security consultancies based in Vienna, Austria
- Security consultancies based in Barueri, Brazil
- Security consultancies based in Belo Horizonte, Brazil
- Security consultancies based in Brasilia, Brazil
- Security consultancies based in Curitiba, Brazil
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
- Security consultancies based in Buenos Aires, Argentina
- Security consultancies based in Adelaide, Australia
- Security consultancies based in Brisbane, Australia
- Security consultancies based in Canberra, Australia
- Security consultancies based in Melbourne, Australia
- Security consultancies based in Perth, Australia
Company intelligence · public preview
Top 25 security consultancies based in Bristol, 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 65 matching company records for security consultancies based in Bristol, United Kingdom, with 592 tracked contacts and 220 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 21, 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 security consultancies based in Bristol, 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 |  Stripe OLTstripeolt.comHQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 63 contacts → |
“From our offices in London, Bristol, and Manchester, Stripe OLT delivers cutting-edge cyber security and IT services to support and protect organisations in an ever-changing…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  EMSECemsec.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 51 contacts → |
“EMSEC is an innovative research company founded in the United Kingdom with offices across India with an intention to provide services and products related to security research…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  I3secure LTDi3secure.co.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 24 contacts → |
“i3Secure is a cyber security and information assurance consultancy protecting the confidentiality, integrity and availability of data across defence, public and private sectors.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Infinity Systems Engineering LTDinfinity-systems.co.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Infinity Systems Engineering LTD is a Bristol based Engineering Consultancy specialising in Systems and Safety Engineering.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Prime Media Safety LTDprimeinfo.co.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Since 2003, Prime has been and continues to be at the forefront when it comes to the provision of operational security support and safety training.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  On Site Security LTDonsitesecurityltd.co.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 15 contacts → |
“On Site Security ltd is a leading provider of security services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Astron Fire & Security LTDastronfireandsecurity.co.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Astron offers a comprehensive design, installation and maintenance service for fire alarms, CCTV, intruder alarms, access control, emergency lights and fire extinguishers, as well…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | KIS Fire And Securitykisfireandsecurity.co.uk HQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 13 contacts → |
“KIS Fire & Security is the South West’s premier Fire and Security Systems company.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Astra Security LTDastrasec.comHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Astra Security Ltd works in partnership with you to help you secure your business.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Navos Technologiesnavos.co.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Navos are specialists in technology solutions, founded by the ex-CIO of Hargreaves Lansdown David Davies.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  RED Technical Services LTDredtechnical.comHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Design, installation and commissioning of Fire and Security systems.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  EVO Fire & Security Limitedevofire.co.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 7 contacts → |
“Independent Specialists in Fire Detection Systems, Life Safety Systems, Intruder Alarm Systems, Access Control Systems & CCTV Systems.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | TP Grouptpgroupglobal.com HQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 7 contacts → |
“TP Group is a leading defence and security Consultancy, with extensive expertise within Science and Technology.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Comera Groupcomeragroup.co.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 5 contacts → |
“Comera Group brings together specialist businesses across four areas: Defence Training & Operations, Intelligence & Autonomous Systems, Energy & Resilience, and Human Performance.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Radiusradius-events.com HQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Your crowd safety specialists.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Security Group LTDsecuritygroupltd.co.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Who we are Security Group is based in Bristol and operates here and in Bath, the Forest of Dean, Chepstow, Clevedon and Trowbridge.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Mathembedded LTDmathembedded.comHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 3 contacts → |
“MathEmbedded is an independent, privately-owned company that specialises in providing expert embedded software consultancy, security, development and training services to a global…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Leigh Visual Security Systems LTDleighvisual.comHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 3 contacts → |
“CCTV & Access Control specialists.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Bristol Risk Solutionsbristolrisksolutions.comHQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Bristol Risk Solutions is passionate about helping businesses of all shapes and sizes find solutions to a wide range of risks such as business continuity, disaster recovery, cyber…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Cobalt Consultancy LTDcobaltconsultancy.com HQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Cobalt Consultancy provides security, risk management and training services to individuals, organisations and government depts.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  The Building Safety Groupbsgltd.co.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 1 contacts → |
“The Building Safety Group are health and safety consultants to the construction industry.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Anshin Security LTDanshin.co.ukHQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Anshin is a consulting company operating in the Accountancy Sector in the UK.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Gladstone Firegladstonefire.co.uk HQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Gladstone Fire is your go-to Partner in achieving Fire Safety Compliance.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Pete Hugh LTDpetehugh.comHQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 1 contacts → |
“If you're a marketing leader at a growing cybersecurity vendor or MSSP, you probably struggle to- Articulate the value you provide in a way that resonates with prospects -…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Thorne Security LTDthorne-security.comHQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Thorne Security specialise in Bristol Safes, Security Doors, Steel Doors, Security, Window and Door Protection, Security Counters, Perimeter Fencing and CCTV.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 65 company matches
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Security consultancies: dataset insights
September 21, 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
65 records in the displayed employee bands.
0 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 Bristol, so it is reported there. Company counts and contact totals on this page are exact for Bristol, over 65 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 21, 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 ↗
Security consultancies by metro in the United Kingdom
- Security consultancies in London1559
- Security consultancies in Manchester132
- Security consultancies in Birmingham101
- Security consultancies in Leeds70
- Security consultancies in Glasgow59
- Security consultancies in Liverpool49
- Security consultancies in Reading44
- Security consultancies in Cardiff41
- Security consultancies in Edinburgh38
- Security consultancies in Nottingham34
- Security consultancies in Cambridge33
- Security consultancies in Northampton31
- Security consultancies in Belfast30
- Security consultancies in Leicester30
- Security consultancies in Southampton30
- Security consultancies in Swindon30
- Security consultancies in Cheltenham29
- Security consultancies in Peterborough28
Questions about this company list
What does Exact match mean for security 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 security consultancies did RevenueBase find based in Bristol, United Kingdom?
The saved snapshot records 65 matching company records, 592 tracked contacts and 220 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 21, 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
Security consultancies by geography
- Security consultancies based in Buenos Aires, Argentina
- Security consultancies based in Adelaide, Australia
- Security consultancies based in Brisbane, Australia
- Security consultancies based in Canberra, Australia
- Security consultancies based in Melbourne, Australia
- Security consultancies based in Perth, Australia
- Security consultancies based in Sydney, Australia
- Security consultancies based in Vienna, Austria
- Security consultancies based in Barueri, Brazil
- Security consultancies based in Belo Horizonte, Brazil
- Security consultancies based in Brasilia, Brazil
- Security consultancies based in Curitiba, Brazil
Cite this list
RevenueBase Data Team. Top 25 security consultancies based in Bristol, United Kingdom. Snapshot: September 21, 2026. https://revenuebase.ai/companies/security-consultancies/united-kingdom/bristol.
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
- Security consultancies based in Buenos Aires, Argentina
- Security consultancies based in Adelaide, Australia
- Security consultancies based in Brisbane, Australia
- Security consultancies based in Canberra, Australia
- Security consultancies based in Melbourne, Australia
- Security consultancies based in Perth, Australia
Company intelligence · public preview
Top 25 security consultancies based in Bristol, United Kingdom
RevenueBase records 65 matching company records for security consultancies based in Bristol, United Kingdom, with 592 tracked contacts and 220 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 21, 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 security consultancies based in Bristol, 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 | Stripe OLTstripeolt.com HQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 63 contacts → |
“From our offices in London, Bristol, and Manchester, Stripe OLT delivers cutting-edge cyber security and IT services to support and protect organisations in an ever-changing…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | EMSECemsec.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 51 contacts → |
“EMSEC is an innovative research company founded in the United Kingdom with offices across India with an intention to provide services and products related to security research…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | I3secure LTDi3secure.co.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 24 contacts → |
“i3Secure is a cyber security and information assurance consultancy protecting the confidentiality, integrity and availability of data across defence, public and private sectors.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Infinity Systems Engineering LTDinfinity-systems.co.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Infinity Systems Engineering LTD is a Bristol based Engineering Consultancy specialising in Systems and Safety Engineering.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Prime Media Safety LTDprimeinfo.co.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Since 2003, Prime has been and continues to be at the forefront when it comes to the provision of operational security support and safety training.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | On Site Security LTDonsitesecurityltd.co.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 15 contacts → |
“On Site Security ltd is a leading provider of security services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Astron Fire & Security LTDastronfireandsecurity.co.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Astron offers a comprehensive design, installation and maintenance service for fire alarms, CCTV, intruder alarms, access control, emergency lights and fire extinguishers, as well…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | KIS Fire And Securitykisfireandsecurity.co.uk HQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 13 contacts → |
“KIS Fire & Security is the South West’s premier Fire and Security Systems company.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Astra Security LTDastrasec.com HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Astra Security Ltd works in partnership with you to help you secure your business.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Navos Technologiesnavos.co.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Navos are specialists in technology solutions, founded by the ex-CIO of Hargreaves Lansdown David Davies.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | RED Technical Services LTDredtechnical.com HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Design, installation and commissioning of Fire and Security systems.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | EVO Fire & Security Limitedevofire.co.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 7 contacts → |
“Independent Specialists in Fire Detection Systems, Life Safety Systems, Intruder Alarm Systems, Access Control Systems & CCTV Systems.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | TP Grouptpgroupglobal.com HQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 7 contacts → |
“TP Group is a leading defence and security Consultancy, with extensive expertise within Science and Technology.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Comera Groupcomeragroup.co.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 5 contacts → |
“Comera Group brings together specialist businesses across four areas: Defence Training & Operations, Intelligence & Autonomous Systems, Energy & Resilience, and Human Performance.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Radiusradius-events.com HQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Your crowd safety specialists.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Security Group LTDsecuritygroupltd.co.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 3 contacts → |
“Who we are Security Group is based in Bristol and operates here and in Bath, the Forest of Dean, Chepstow, Clevedon and Trowbridge.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Mathembedded LTDmathembedded.com HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 3 contacts → |
“MathEmbedded is an independent, privately-owned company that specialises in providing expert embedded software consultancy, security, development and training services to a global…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Leigh Visual Security Systems LTDleighvisual.com HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 3 contacts → |
“CCTV & Access Control specialists.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Bristol Risk Solutionsbristolrisksolutions.com HQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Bristol Risk Solutions is passionate about helping businesses of all shapes and sizes find solutions to a wide range of risks such as business continuity, disaster recovery, cyber…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Cobalt Consultancy LTDcobaltconsultancy.com HQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Cobalt Consultancy provides security, risk management and training services to individuals, organisations and government depts.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | The Building Safety Groupbsgltd.co.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 1 contacts → |
“The Building Safety Group are health and safety consultants to the construction industry.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Anshin Security LTDanshin.co.uk HQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Anshin is a consulting company operating in the Accountancy Sector in the UK.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Gladstone Firegladstonefire.co.uk HQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Gladstone Fire is your go-to Partner in achieving Fire Safety Compliance.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Pete Hugh LTDpetehugh.com HQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 1 contacts → |
“If you're a marketing leader at a growing cybersecurity vendor or MSSP, you probably struggle to- Articulate the value you provide in a way that resonates with prospects -…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Thorne Security LTDthorne-security.com HQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Thorne Security specialise in Bristol Safes, Security Doors, Steel Doors, Security, Window and Door Protection, Security Counters, Perimeter Fencing and CCTV.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 65 company matches
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Security consultancies: dataset insights
September 21, 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
65 records in the displayed employee bands.
0 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 Bristol, so it is reported there. Company counts and contact totals on this page are exact for Bristol, over 65 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 21, 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 ↗
Security consultancies by metro in the United Kingdom
- Security consultancies in London1559
- Security consultancies in Manchester132
- Security consultancies in Birmingham101
- Security consultancies in Leeds70
- Security consultancies in Glasgow59
- Security consultancies in Liverpool49
- Security consultancies in Reading44
- Security consultancies in Cardiff41
- Security consultancies in Edinburgh38
- Security consultancies in Nottingham34
- Security consultancies in Cambridge33
- Security consultancies in Northampton31
- Security consultancies in Belfast30
- Security consultancies in Leicester30
- Security consultancies in Southampton30
- Security consultancies in Swindon30
- Security consultancies in Cheltenham29
- Security consultancies in Peterborough28
Questions about this company list
What does Exact match mean for security 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 security consultancies did RevenueBase find based in Bristol, United Kingdom?
The saved snapshot records 65 matching company records, 592 tracked contacts and 220 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 21, 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
Security consultancies by geography
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Cite this list
RevenueBase Data Team. Top 25 security consultancies based in Bristol, United Kingdom. Snapshot: September 21, 2026. https://revenuebase.ai/companies/security-consultancies/united-kingdom/bristol.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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