Company lists · Data refreshed September 2026

Top 25 Highest paying security companies based in the United Kingdom

Name: Highest paying security companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,510 companies tracked

RevenueBase identified 1,510 highest paying security companies headquartered in the United Kingdom as of September 2026 and tracks 103,546 professional contacts across them, including 2,987 with verified work emails. London is the largest hub.

This list covers highest paying 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

1,510Companies

103,546Contacts tracked

2,987Verified emails

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The 25 largest highest paying security companies based in the United Kingdom

Ranked by team size

Top 25 of 1,510 highest paying security companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to highest paying security companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	G4s	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	10001+	79,699 contacts →
	Partial evidence “G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Source: RevenueBase Database · checked Sep 21, 2026
2	TSS Total Security Services LTD	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	5,001-10,000	1,451 contacts →
	Partial evidence “TSS is the UK’s largest retail specialist security company, employing over 7500+ security personnel.” Source: RevenueBase Database · checked Sep 21, 2026
3	CIS Security Limited	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	919 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 21, 2026
4	Professional Security	Partial evidence	Leeds, United KingdomHQ checked Sep 21, 2026	1,001-5,000	884 contacts →
	Partial evidence “Professional Security is one of the UK’s leading providers of security services, specialising in the hospitality and events sectors.” Source: RevenueBase Database · checked Sep 21, 2026
5	Securigroup	Partial evidence	United KingdomHQ checked Sep 21, 2026	1,001-5,000	765 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
6	Icts UK & Ireland	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	597 contacts →
	Partial evidence “Part of ICTS Europe Group, ICTS UK & Ireland is a professional services firm which has been specialised in security risk for the past 39+ years.” Source: RevenueBase Database · checked Sep 21, 2026
7	Securityhq	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	501-1,000	502 contacts →
	Partial evidence “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Source: RevenueBase Database · checked Sep 21, 2026
8	Lodge Security	Partial evidence	Cirencester, United KingdomHQ checked Sep 21, 2026	1,001-5,000	422 contacts →
	Partial evidence “Unlike traditional security providers, we're redefining what protection means in today's world.” Source: RevenueBase Database · checked Sep 21, 2026
9	Ward Security	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	419 contacts →
	Partial evidence “Ward is an award winning, privately owned business, providing bespoke risk and security solutions including protective security personnel, explosive search dogs, narcotic search…” Source: RevenueBase Database · checked Sep 21, 2026
10	Regency Security	Partial evidence	Braintree, United KingdomHQ checked Sep 21, 2026	1,001-5,000	326 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 21, 2026
11	SES Group	Indirect evidence	Harlow, United KingdomHQ checked Sep 21, 2026	1,001-5,000	285 contacts →
	Indirect evidence “SES Group was founded in 1998 by Dr Tony Ball and rebranded as SES Group in 2014.” Source: RevenueBase Database · checked Sep 21, 2026
12	Pilgrims Risk Management Group	Partial evidence	Woking, United KingdomHQ checked Sep 21, 2026	201-500	205 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
13	Unitrust Protection Services	Partial evidence	Middx, United KingdomHQ checked Sep 21, 2026	201-500	175 contacts →
	Partial evidence “We are able to supply a one stop security service for all types of security requirement.” Source: RevenueBase Database · checked Sep 21, 2026
14	The Brooknight Group	Partial evidence	Milton Keynes, United KingdomHQ checked Sep 21, 2026	201-500	166 contacts →
	Partial evidence “Providing Exceptional Security Services to Corporate and Retail Customers - Brooknight Security, with over 30 years of experience, is the go-to choice for businesses seeking…” Source: RevenueBase Database · checked Sep 21, 2026
15	GET Licensed	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	163 contacts →
	Partial evidence “Get Licensed is the UK's leading provider of security training, screening, and staffing solutions.” Source: RevenueBase Database · checked Sep 21, 2026
16	The Keyholding Company	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	137 contacts →
	Partial evidence “The Keyholding Company are a tech-enabled mobile security services company, specialising in alarm response, mobile patrols, locks and unlocks, emergency and temporary guarding…” Source: RevenueBase Database · checked Sep 21, 2026
17	Vespasian Security	Partial evidence	Portsmouth, United KingdomHQ checked Sep 21, 2026	201-500	127 contacts →
	Partial evidence “Vespasian Security was formed in February 2006.” Source: RevenueBase Database · checked Sep 21, 2026
18	Khipu Networks	Partial evidence	Fleet, United KingdomHQ checked Sep 21, 2026	51-200	125 contacts →
	Partial evidence “KHIPU Networks is an award winning international Cyber Security Company delivering a wide range of network, wireless and security solutions, technologies and services across…” Source: RevenueBase Database · checked Sep 21, 2026
19	Solace Global	Indirect evidence	Poole, United KingdomHQ checked Sep 21, 2026	201-500	115 contacts →
	Indirect evidence “Solace Global Risk began in 2010 with a simple belief: when people face risk, they need partners who act quickly and stand by their word.” Source: RevenueBase Database · checked Sep 21, 2026
20	Guardforce Security Limited	Indirect evidence	Hornchurch, United KingdomHQ checked Sep 21, 2026	501-1,000	111 contacts →
	Indirect evidence “We are a well-established company that supplies specialist Close Protection, Door Supervisor services to Private Individuals, Visiting Royal Families, Government Officials…” Source: RevenueBase Database · checked Sep 21, 2026
21	Consortio Security	Indirect evidence	Castle Donington, United KingdomHQ checked Sep 21, 2026	501-1,000	106 contacts →
	Indirect evidence “Protecting People, Property, Assets & Brands.” Source: RevenueBase Database · checked Sep 21, 2026
22	City Security	Partial evidence	Plympton, United KingdomHQ checked Sep 21, 2026	51-200	105 contacts →
	Partial evidence “City Security understands that our staff are the first and last person a patron encounters on their visit to a venue.” Source: RevenueBase Database · checked Sep 21, 2026
23	Octavian Security	Partial evidence	Bingham, United KingdomHQ checked Sep 21, 2026	201-500	91 contacts →
	Partial evidence “Octavian Security is part of the Octavian Group, a global leader delivering integrated solutions across security, facilities management, and technology-led services.” Source: RevenueBase Database · checked Sep 21, 2026
24	K4 Security - K4 Group	Partial evidence	Hounslow, United KingdomHQ checked Sep 21, 2026	201-500	89 contacts →
	Partial evidence “For a better service and competitive price try K4 Security Services At K4 we offer the following: 1.” Source: RevenueBase Database · checked Sep 21, 2026
25	Croma Security Solutions Group PLC Cssg	Partial evidence	Whiteley, United KingdomHQ checked Sep 21, 2026	501-1,000	87 contacts →
	Partial evidence “Croma Security Solutions Group (CSSG) began in 1970 as a family-run business in Shirley, Southampton, known as County Locksmiths.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: highest paying security companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names highest paying security companies.
Partial evidence: Its own public description names part of highest paying security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name highest paying security companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,510 highest paying security companies based in the United Kingdom

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Highest paying security companies based in the United Kingdom at a glance

As of Sep 21, 2026

2.9%Verified-email coverage

68.6Average contacts per company

11-50Median size (employees)

31.4%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

556

11-50

484

51-200

320

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,510 companies.

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 highest paying security companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, 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 “highest paying security companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names highest paying security companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among highest paying 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 its RevenueBase Smart Search 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, 2,987 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 21, 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.

Highest paying security companies by metro

Highest paying security companies in London474
Highest paying security companies in Birmingham35
Highest paying security companies in Manchester34

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names highest paying security companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many highest paying security companies are there based in the United Kingdom?

RevenueBase identified 1,510 highest paying 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?

G4s, headquartered in London, tops this list with the largest team on record.

Which city has the most highest paying security companies?

London leads with 474 headquartered companies, followed by Birmingham (35) and Manchester (34).

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 2,987 verified decision-maker contacts tracked across these 1,510 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 21, 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 Smart Search, 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.