Company lists · Data refreshed September 2026

Top 25 Construction security companies based in the United Kingdom

Name: Construction 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 815 companies tracked

RevenueBase identified 815 construction security companies headquartered in the United Kingdom as of September 2026 and tracks 12,068 professional contacts across them, including 1,322 with verified work emails. London is the largest hub.

This list covers construction 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

815Companies

12,068Contacts tracked

1,322Verified emails

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The 25 largest construction security companies based in the United Kingdom

Ranked by team size

Top 25 of 815 construction 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 construction 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	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
2	VPS Uk&i	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	272 contacts →
	Strong evidence “VPS is Europe’s leading temporary security specialist, protecting vacant properties, remote sites, construction and infrastructure projects with tailored, risk-based security…” Source: RevenueBase Database · checked Sep 21, 2026
3	Interr	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	1,001-5,000	232 contacts →
	Indirect evidence “Established in 1994, Interr is a specialist agency providing intelligent guarding, reception, remote monitoring & response and front of house solutions within the retail, hotel…” Source: RevenueBase Database · checked Sep 21, 2026
4	Detertech UK	Partial evidence	Telford, United KingdomHQ checked Sep 21, 2026	51-200	170 contacts →
	Partial evidence “DeterTech is an industry leading provider of highly innovative and intelligence-led end-to-end security solutions.” Source: RevenueBase Database · checked Sep 21, 2026
5	Trigion Security Services LTD	Partial evidence	Sidcup, United KingdomHQ checked Sep 21, 2026	201-500	166 contacts →
	Partial evidence “Trigion Security Services is the UK provider of Security Guarding and Technical Solutions for Facilicom UK.” Source: RevenueBase Database · checked Sep 21, 2026
6	Kingdom Security Services	Partial evidence	Newton-le-willows, United KingdomHQ checked Sep 21, 2026	5,001-10,000	126 contacts →
	Partial evidence “About Kingdom Security Established in March 1993, Kingdom Security is a leading UK security provider delivering professional, fully licensed security services nationwide.” Source: RevenueBase Database · checked Sep 21, 2026
7	Snsg LTD	Partial evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	201-500	124 contacts →
	Partial evidence “SNSG is the first of a new generation of security companies where continued investment in people and a dedication to customer service brings a new level of professionalism and…” Source: RevenueBase Database · checked Sep 21, 2026
8	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
9	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
10	Northern Security LTD	Partial evidence	Carlisle, United KingdomHQ checked Sep 21, 2026	201-500	69 contacts →
	Partial evidence “Northern Security Ltd is a leading guarding, alarm response and electronic security business operating throughout the North of England and South West Scotland.” Source: RevenueBase Database · checked Sep 21, 2026
11	Britsafe Limited	Partial evidence	Amy Johnson Way, United KingdomHQ checked Sep 21, 2026	501-1,000	66 contacts →
	Partial evidence “Welcome to Britsafe Limited Years of Security and Cleaning experience have made us masters in providing defect-free security and cleaning solutions tailor-made to suit the…” Source: RevenueBase Database · checked Sep 21, 2026
12	City Security Services Part Of City Group Security	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	64 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 21, 2026
13	Servo Group	Partial evidence	Leeds, United KingdomHQ checked Sep 21, 2026	1,001-5,000	63 contacts →
	Partial evidence “Servo Group - Operating 24/7 nationwide a multi service provider - S.I.A Licensed Security Guards, Monitored CCTV, Vacant property management, Labour, Rail (all disciplines) PTS…” Source: RevenueBase Database · checked Sep 21, 2026
14	Sentinel Group Security	Partial evidence	Loughton, United KingdomHQ checked Sep 21, 2026	201-500	60 contacts →
	Partial evidence “Sentinel Group Security is a fast growing provider of all aspects of security personnel and manned security services operating across the United Kingdom.” Source: RevenueBase Database · checked Sep 21, 2026
15	Black Diamond Security	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	58 contacts →
	Partial evidence “Black Diamond Security - Safeguarding Your World.” Source: RevenueBase Database · checked Sep 21, 2026
16	Controlled Space Limited	Partial evidence	Leeds, United KingdomHQ checked Sep 21, 2026	201-500	56 contacts →
	Partial evidence “Controlled Space has been developed over the past 22 years to offer market leading security, stewarding and crowd management solutions.” Source: RevenueBase Database · checked Sep 21, 2026
17	Shield Security Services LTD	Partial evidence	Aldershot, United KingdomHQ checked Sep 21, 2026	51-200	53 contacts →
	Partial evidence “Shield Security Services Limited was incorporated in 1986.” Source: RevenueBase Database · checked Sep 21, 2026
18	Leon Guarding	Partial evidence	Ilford, United KingdomHQ checked Sep 21, 2026	201-500	53 contacts →
	Partial evidence “LEON Guarding provides reliable, tailored security solutions to protect individuals, organizations, and assets all over UK.” Source: RevenueBase Database · checked Sep 21, 2026
19	The Protector Group	Partial evidence	Gateshead, United KingdomHQ checked Sep 21, 2026	201-500	52 contacts →
	Partial evidence “The Protector Group are a multi disciplined security company specializing in Manned Guarding, CCTV installation, maintenance and monitoring, Intruder and Fire alarm installation…” Source: RevenueBase Database · checked Sep 21, 2026
20	Taybar Security LTD	Partial evidence	Birmingham, United KingdomHQ checked Sep 21, 2026	201-500	52 contacts →
	Partial evidence “Taybar Security are a leading security services provider, that support a variety of businesses with their specific needs.” Source: RevenueBase Database · checked Sep 21, 2026
21	Secur-It Integrated Services LTD	Partial evidence	South Normanton, United KingdomHQ checked Sep 21, 2026	201-500	52 contacts →
	Partial evidence “Secur-it is a leading provider of security services and risk management.” Source: RevenueBase Database · checked Sep 21, 2026
22	Right Guard Security	Partial evidence	Canterbury, United KingdomHQ checked Sep 21, 2026	201-500	49 contacts →
	Partial evidence “Right Guard Security was formed in 1990 in response to an escalation of public order and crowd safety related issues within the entertainment industry along with meeting the…” Source: RevenueBase Database · checked Sep 21, 2026
23	Risk Management Security Services	Partial evidence	High Wycombe, United KingdomHQ checked Sep 21, 2026	51-200	46 contacts →
	Partial evidence “Risk Management Security Services specialise in providing bespoke security to commercial, residential and Industrial premises.” Source: RevenueBase Database · checked Sep 21, 2026
24	UK Protection LTD	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	45 contacts →
	Partial evidence “UK Protection is widely recognised as the premier supplier of security solutions to the Corporate, Jewellery and Luxury Retail industries across the UK.” Source: RevenueBase Database · checked Sep 21, 2026
25	Phoenix FMS	Strong evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 21, 2026	201-500	44 contacts →
	Strong evidence “Design, install and maintain CCTV Systems Intruder Systems Access Control Manned Security Guarding Event Stewarding Construction Cleaning Commercial Cleaning Builders & Sparkle…” 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: construction 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 construction security companies.
Partial evidence: Its own public description names part of construction security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name construction 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 815 construction security companies based in the United Kingdom

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Construction security companies based in the United Kingdom at a glance

As of Sep 21, 2026

11.0%Verified-email coverage

14.8Average contacts per company

11-50Median size (employees)

22.1%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

236

11-50

268

51-200

214

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 815 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 construction 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 “construction 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 construction 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 construction 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, 1,322 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.

Construction security companies by metro

Construction security companies in London180
Construction security companies in Birmingham33
Construction security companies in Manchester27

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 construction 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 construction security companies are there based in the United Kingdom?

RevenueBase identified 815 construction 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?

Securigroup, headquartered in United Kingdom, tops this list with the largest team on record.

Which city has the most construction security companies?

London leads with 180 headquartered companies, followed by Birmingham (33) and Manchester (27).

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 1,322 verified decision-maker contacts tracked across these 815 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.