Company lists · Data refreshed September 2026
Top 25 Healthcare security companies based in the United Kingdom
RevenueBase identified 304 healthcare security companies headquartered in the United Kingdom as of September 2026 and tracks 3,499 professional contacts across them, including 519 with verified work emails and 202 with mobile numbers. London is the largest hub.
This list covers healthcare security companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 healthcare security companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 325 | ||||
“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…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 136 | ||||
“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.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 90 | ||||
“For a better service and competitive price try K4 Security Services At K4 we offer the following: 1.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 87 | ||||
“Croma Security Solutions Group (CSSG) began in 1970 as a family-run business in Shirley, Southampton, known as County Locksmiths.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 70 | ||||
“Northern Security Ltd is a leading guarding, alarm response and electronic security business operating throughout the North of England and South West Scotland.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 64 | ||||
“City Security Services (CSS) have more than 25 years’ experience within the corporate security, public sector, education and social housing markets delivering manned guarding…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 62 | ||||
“Black Diamond Security - Safeguarding Your World.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 52 | ||||
“Secur-it is a leading provider of security services and risk management.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 44 | ||||
“Design, install and maintain CCTV Systems Intruder Systems Access Control Manned Security Guarding Event Stewarding Construction Cleaning Commercial Cleaning Builders & Sparkle…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 43 | ||||
“All in Black are an accredited security solutions provider with over 20 years’ experience at the highest level across the UK.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 43 | ||||
“AK9 Security and FM Solutions offers comprehensive security solutions for businesses, governmental organizations, and residential areas.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 40 | ||||
“ATEC are here to make your business safe, giving you the confidence in the security of your business so It can thrive every day, now and long into the future.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 38 | ||||
“Since 1996, ClearView has been meeting some of the world's most demanding security requirements by utilising our experience in design, manufacture, installation and service of the…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 37 | ||||
“Doyle Security Ltd is a leading provider of professional security solutions, proudly safeguarding businesses, homeowners, and their properties for over four decades.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 32 | ||||
“Oak Security Services was founded in July 2015 and is now one of the fastest growing security companies in the UK.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 32 | ||||
“Security Specialists A discreet, reliable and effective service Providing highly trained professional security guards and associated round the clock security services and for over…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 32 | ||||
“At Samson Security Fire & Facilities, we provide integrated security, fire protection, and facilities management solutions designed to keep people, property, and operations safe…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | Systematic Security LTDPartial evidence | 31 | |||
“Systematic Security deliver static manned guarding, mobile patrols, open and lock ups, keyholding and emergency response requirements as well as Vacant Property inspections to a…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 30 | ||||
“Many security companies pull together different providers to deliver a single service.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 27 | ||||
“As a specialist in security solutions we are committed to innovation in keeping people and property safe.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | CN SecurityPartial evidence | 26 | |||
“We at CN Security Ltd pride ourselves on delivering a bespoke service tailored to the needs of our clients, irrespective of size or location.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | Olympian Security Services LimitedPartial evidence | 26 | |||
“Olympian provides a full range of security and risk management services with a core focus on commercial, retail and health care sectors.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 25 | ||||
“We're a multi-award-winning security company, specialising in Corporate, Commercial and Construction solutions.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | 25 | ||||
“We deliver professional, accredited security services that protect people, property, and organisations across the UK.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 23 | ||||
“ANUBIS SECURITY LTD is a security and investigations company based out of 5 Union Street, Carluke, United Kingdom.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 304 healthcare security companies based in the United Kingdom
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Healthcare security companies based in the United Kingdom at a glance
As of Sep 3, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among healthcare security companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- 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
- Companies headquartered in the United Kingdom whose own description of what they do matches “healthcare security companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among healthcare security companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 519 across the full list. 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 3, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Healthcare security companies by metro
- Healthcare security companies in London54
Frequently asked
How many healthcare security companies are there based in the United Kingdom?
RevenueBase identified 304 healthcare security companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Regency Security, headquartered in Braintree, tops this list with the largest team on record.
Which city has the most healthcare security companies?
London leads with 54 headquartered companies, followed by Birmingham (12) and Manchester (11).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 519 verified decision-maker contacts tracked across these 304 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 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.
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