Company lists · Data refreshed November 2026

Top 25 Intelligence and security services based in the United Kingdom

RevenueBase identified 1,764 company matches for intelligence and security services associated with the United Kingdom as of November 2026 and tracks 34,615 professional contacts across them, including 6,510 with verified work emails. London is the largest hub.

This list covers company matches for intelligence and security services associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
1,764Companies
34,615Contacts tracked
6,510Verified emails
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The 25 largest intelligence and security services based in the United Kingdom

Ranked by team size
Top 25 of 1,764 company matches for intelligence and security services based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 5, 20261,001-5,0003,200 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 · Nov 5, 2026 · View company records in RevenueBase
2Exact matchWestcliff-on-sea, United KingdomHQ recorded Nov 5, 20265,001-10,0002,067 contacts →

Exact match

“Wilson James provides safe, secure, customer-led solutions to more than 300 clients across the UK and Europe.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchNorthampton, United KingdomHQ recorded Nov 5, 202610001+1,667 contacts →

Exact match

“We are an intelligence-led security business.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 5, 20261,001-5,0001,029 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 · Nov 5, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Nov 5, 20261,001-5,000981 contacts →

Exact match

“Corps Security - experts in security with social value Built on over 165 years of experience, Corps provides specialist security services, across the UK, to ensure the safety of…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchLeeds, United KingdomHQ recorded Nov 5, 20261,001-5,000968 contacts →

Exact match

“Professional Security is one of the UK’s leading providers of security services, specialising in the hospitality and events sectors.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchUnited KingdomHQ recorded Nov 5, 20261,001-5,000820 contacts →

Exact match

“Ranked in the top 1% of UK security companies, as approved by the Security Industry Authority, SecuriGroup is an award-winning security company, specialising in the provision of…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchRomsey, United KingdomHQ recorded Nov 5, 20261,001-5,000755 contacts →

Exact match

“At Roke, we stand at the forefront of defence and security, delivering cutting-edge intelligence and engineering solutions that protect nations, troops, borders, and businesses.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Nov 5, 20261,001-5,000458 contacts →

Exact match

“Ward is an award winning, privately owned business, providing bespoke risk and security solutions including protective security personnel, explosive search dogs, narcotic search…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchCirencester, United KingdomHQ recorded Nov 5, 20261,001-5,000449 contacts →

Exact match

“Unlike traditional security providers, we're redefining what protection means in today's world.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Nov 5, 20265,001-10,000373 contacts →

Exact match

“ASEL design, develop and deliver fully bespoke and integrated security solutions, seamlessly bringing together people, technology and processes to achieve results-driven outcomes.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchBraintree, United KingdomHQ recorded Nov 5, 20261,001-5,000337 contacts →

Exact match

“Established in 1993, with commitment to our customers and staff alongside a strong ethos and standards driven approach, Regency Security is now the largest provider of door…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchGlobal, United KingdomHQ recorded Nov 5, 2026201-500289 contacts →

Exact match

“Sibylline is the world’s leading private consultancy for geopolitical risk, intelligence, and strategic insight, dedicated to helping leaders and organisations anticipate change…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchBarrow-upon-humber, United KingdomHQ recorded Nov 5, 20261,001-5,000275 contacts →

Exact match

“We have moved as Profile Security Services is now Proudly OCS.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchLeeds, United KingdomHQ recorded Nov 5, 2026501-1,000265 contacts →

Exact match

“First Response Group (FRG) is one of the leading security, risk and FM providers in the UK delivering manned security, technology solutions, building management and vacant…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchWoking, United KingdomHQ recorded Nov 5, 2026201-500202 contacts →

Exact match

“Pilgrims are a global security, risk management and service support company that identifies and manages risks for clients across all sectors, including oil & gas, telecoms…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-200188 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 · Nov 5, 2026 · View company records in RevenueBase
18Exact matchLeeds, United KingdomHQ recorded Nov 5, 20261,001-5,000184 contacts →

Exact match

“Established in 1978, Bridgegate Security is proud to be one of the UK’s largest independent security contractors.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchMiddx, United KingdomHQ recorded Nov 5, 2026201-500183 contacts →

Exact match

“We are able to supply a one stop security service for all types of security requirement.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchTelford, United KingdomHQ recorded Nov 5, 202651-200180 contacts →

Exact match

“DeterTech is an industry leading provider of highly innovative and intelligence-led end-to-end security solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchEnfield, United KingdomHQ recorded Nov 5, 2026501-1,000171 contacts →

Exact match

“We are GUK.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchSwindon, United KingdomHQ recorded Nov 5, 202651-200171 contacts →

Exact match

“One of the largest independent security companies in the UK.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchActon, United KingdomHQ recorded Nov 5, 2026n/a152 contacts →

Exact match

“Premium Security Services (PSS) delivers expert security solutions across the leisure, retail, and commercial sectors.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchNewton-le-willows, United KingdomHQ recorded Nov 5, 20265,001-10,000151 contacts →

Exact match

“About Kingdom Security Established in March 1993, Kingdom Security is a leading UK security provider delivering professional, fully licensed security services nationwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchCambridge, United KingdomHQ recorded Nov 5, 2026201-500149 contacts →

Exact match

“Established in 1973, we have been protecting brands and businesses for over 40 years.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 1,764 intelligence and security services based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 6,510 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Intelligence and security services based in the United Kingdom at a glance

As of Nov 5, 2026
18.8%Verified-email coverage
19.6Average contacts per company
11-50Median size (employees)
34.4%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
748
11-50
497
51-200
325
201-500
99
501-1,000
26
1,001-5,000
20
5,001-10,000
6
10001+
6

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 1,764 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 the United Kingdom whose business descriptions match “intelligence and security services” 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 6,510 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 November 5, 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.

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 “intelligence and security services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many intelligence and security services are there based in the United Kingdom?

RevenueBase identified 1,764 company matches for intelligence and security services associated with the United Kingdom as of November 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 has the most intelligence and security services?

London leads with 606 company records, followed by Birmingham (36) and Manchester (31).

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 6,510 professional contacts with verified work emails tracked across these 1,764 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 November 5, 2026.

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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.