Company lists · Data refreshed November 2026

Top 25 Security training service providers based in the United Kingdom

RevenueBase identified 566 company matches for security training service providers associated with the United Kingdom as of November 2026 and tracks 5,933 professional contacts across them, including 939 with verified work emails. London is the largest hub.

This list covers company matches for security training service providers 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
566Companies
5,933Contacts tracked
939Verified emails
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The 25 largest security training service providers based in the United Kingdom

Ranked by team size
Top 25 of 566 company matches for security training service providers 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 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
2Exact matchShirley, United KingdomHQ recorded Nov 5, 20261,001-5,000246 contacts →

Exact match

“MAN Commercial is a leading security company and Training Academy based in Solihull, West Midlands.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchManchester, United KingdomHQ recorded Nov 5, 2026n/a233 contacts →

Exact match

“At CAPSLOCK, we’re redefining how adults transition into cyber security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Nov 5, 2026n/a185 contacts →

Exact match

“Security Blue Team is now Centri.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-200176 contacts →

Exact match

“Get Licensed is the UK's leading provider of security training, screening, and staffing solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchManchester, United KingdomHQ recorded Nov 5, 202651-200165 contacts →

Exact match

“Capricorn Security Group has been a Security Industry Authority (SIA) approved contractor for over 9 years and is ranked in the top 5% of Security Companies in the UK.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchSible Hedingham, United KingdomHQ recorded Nov 5, 2026501-1,000149 contacts →

Exact match

“In an ever-changing world, SGC Security Services has evolved to provide a comprehensive Security, Training, NHS Support Services, Crowd Safety, and Risk Management package.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchManchester, United KingdomHQ recorded Nov 5, 20261,001-5,000131 contacts →

Exact match

“Training with HSS.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchMayfair, United KingdomHQ recorded Nov 5, 2026201-500113 contacts →

Exact match

“Rossi Security have been providing Luxury Security services in London and Bicester Village, Oxfordshire since 2009.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchStourport-on-severn, United KingdomHQ recorded Nov 5, 2026201-50090 contacts →

Exact match

“CyberGuard Technologies is the security division of Wavenet.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchMacclesfield, United KingdomHQ recorded Nov 5, 202611-5057 contacts →

Exact match

“MDSec are a UK based consultancy with a passion for information security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchEast Grinstead, United KingdomHQ recorded Nov 5, 2026201-50057 contacts →

Exact match

“Interforce provide professional, trained, security operators and response teams to organisations who have a responsibility to keep people safe and prevent crime.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchLiverpool, United KingdomHQ recorded Nov 5, 2026201-50056 contacts →

Exact match

“GSTS is a UK-wide multi-service organisation delivering security, facilities support, training and risk management solutions across complex and regulated environments.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchSouth Normanton, United KingdomHQ recorded Nov 5, 2026201-50054 contacts →

Exact match

“Secur-it is a leading provider of security services and risk management.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchAldershot, United KingdomHQ recorded Nov 5, 202651-20054 contacts →

Exact match

“Shield Security Services Limited was incorporated in 1986.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchSwansea, United KingdomHQ recorded Nov 5, 2026201-50052 contacts →

Exact match

“SANS is the world's largest and most trusted provider of cyber security training.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchBarnet, United KingdomHQ recorded Nov 5, 2026501-1,00039 contacts →

Exact match

“In today’s advanced, interconnected world, protecting the infrastructure that allows society to function is crucial.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchSaffron Walden, United KingdomHQ recorded Nov 5, 202651-20038 contacts →

Exact match

“Omerta - A Global Security Technology and Services Company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchLancaster, United KingdomHQ recorded Nov 5, 202611-5037 contacts →

Exact match

“Cyber security can feel overwhelming.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchManchester, United KingdomHQ recorded Nov 5, 2026201-50031 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchBarnsley, United KingdomHQ recorded Nov 5, 202611-5029 contacts →

Exact match

“We work with organisations to improve their information security and data governance through training tools that capture employee attention and build positive new behaviours.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchAltrincham, United KingdomHQ recorded Nov 5, 202611-5029 contacts →

Exact match

“Based in Manchester UK, we are an independent Cyber Security Consultancy providing Security services across a wide range of markets, from multi-national Corporate Organisations…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchRedditch, United KingdomHQ recorded Nov 5, 202651-20029 contacts →

Exact match

“At Advantage One, we are results-driven and we work in partnership with our customers to identify their needs, delivering a first-class security service and ensuring optimum…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchGloucester, United KingdomHQ recorded Nov 5, 202611-5028 contacts →

Exact match

“CY2 is a UK based training, exercising and R&D company headquartered in Gloucester, supporting organisations with operational capability development.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchDarlington, United KingdomHQ recorded Nov 5, 202651-20028 contacts →

Exact match

“Close Protection Security is an industry-leading security company, established in 2017 and based in the North East of England, created by Glenn Bartlett.”

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

Showing 25 of 566 security training service providers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 939 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Security training service providers based in the United Kingdom at a glance

As of Nov 5, 2026
15.8%Verified-email coverage
10.5Average contacts per company
1-10Median size (employees)
24.4%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
328
11-50
138
51-200
59
201-500
22
501-1,000
6
1,001-5,000
7

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 566 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 “security training service providers” 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 939 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.

Security training service providers by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “security training service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many security training service providers are there based in the United Kingdom?

RevenueBase identified 566 company matches for security training service providers 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?

Regency Security tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most security training service providers?

London leads with 138 company records, followed by Manchester (24) and Glasgow (8).

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 939 professional contacts with verified work emails tracked across these 566 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.

Ready to reach these companies? Verified emails and direct dials for all 566 security training service providers based in the United Kingdom. Start with a free account, no credit card.

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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.