Company lists · Data refreshed September 2026

Top 25 Residential security companies based in the United Kingdom

Name: Residential 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 5, 2026 953 companies tracked

RevenueBase identified 953 residential security companies headquartered in the United Kingdom as of September 2026 and tracks 9,050 professional contacts across them, including 985 with verified work emails and 561 with mobile numbers. London is the largest hub.

This list covers residential 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 5, 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 5, 2026 86% judged on-target in blind review

953Companies

9,050Contacts tracked

985Verified emails

561Mobile numbers

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The 25 largest residential security companies based in the United Kingdom

Ranked by team size

Top 25 of 953 residential security companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to residential 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	K4 Security - K4 Group	Partial evidence	Hounslow, United KingdomHQ checked Sep 5, 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 5, 2026
2	Croma Security Solutions Group PLC Cssg	Partial evidence	Whiteley, United KingdomHQ checked Sep 5, 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 5, 2026
3	Knight Protection	Partial evidence	Camberley, United KingdomHQ checked Sep 5, 2026	201-500	81 contacts →
	Partial evidence “Knight Protection has nearly three decades’ experience providing bespoke protection and security solutions to private individuals, private estates, and corporate and public sector…” Source: RevenueBase Database · checked Sep 5, 2026
4	ABEL	Partial evidence	Leicester, United KingdomHQ checked Sep 5, 2026	51-200	70 contacts →
	Partial evidence “With over 50 years’ experience in the security industry, Abel has grown to become one of the UK’s largest privately owned providers of electronic security systems.” Source: RevenueBase Database · checked Sep 5, 2026
5	Northern Security LTD	Partial evidence	Carlisle, United KingdomHQ checked Sep 5, 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 5, 2026
6	Britsafe Limited	Partial evidence	Amy Johnson Way, United KingdomHQ checked Sep 5, 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 5, 2026
7	City Security Services Part Of City Group Security	Partial evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
8	Sentinel Group Security	Partial evidence	Loughton, United KingdomHQ checked Sep 5, 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 5, 2026
9	Shield Security Services LTD	Partial evidence	Aldershot, United KingdomHQ checked Sep 5, 2026	51-200	53 contacts →
	Partial evidence “Shield Security Services Limited was incorporated in 1986.” Source: RevenueBase Database · checked Sep 5, 2026
10	The Protector Group	Partial evidence	Gateshead, United KingdomHQ checked Sep 5, 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 5, 2026
11	Taybar Security LTD	Partial evidence	Birmingham, United KingdomHQ checked Sep 5, 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 5, 2026
12	Secur-It Integrated Services LTD	Partial evidence	South Normanton, United KingdomHQ checked Sep 5, 2026	201-500	52 contacts →
	Partial evidence “Secur-it is a leading provider of security services and risk management.” Source: RevenueBase Database · checked Sep 5, 2026
13	Portal Security	Partial evidence	Cumbernauld, United KingdomHQ checked Sep 5, 2026	201-500	51 contacts →
	Partial evidence “Portal Security is a leading provider of security services dedicated to safeguarding individuals, businesses, and communities.” Source: RevenueBase Database · checked Sep 5, 2026
14	Connelly Security Systems LTD CSS LTD	Indirect evidence	Glasgow, United KingdomHQ checked Sep 5, 2026	51-200	49 contacts →
	Indirect evidence “CSS is Scotland’s leading supplier and installer of domestic and commercial intruder and fire alarm systems.” Source: RevenueBase Database · checked Sep 5, 2026
15	Associated Security Solutions	Partial evidence	Manchester, United KingdomHQ checked Sep 5, 2026	51-200	47 contacts →
	Partial evidence “We're here to help you sufficiently protect your valued goods - whether its safeguarding items in your home or putting a security strategy in place for your business, we've got…” Source: RevenueBase Database · checked Sep 5, 2026
16	Risk Management Security Services	Strong evidence	High Wycombe, United KingdomHQ checked Sep 5, 2026	51-200	46 contacts →
	Strong evidence “Risk Management Security Services specialise in providing bespoke security to commercial, residential and Industrial premises.” Source: RevenueBase Database · checked Sep 5, 2026
17	UK Protection LTD	Partial evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
18	Phoenix FMS	Partial evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 5, 2026	201-500	44 contacts →
	Partial 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 5, 2026
19	Ak9 Security And FM Solutions LTD	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	43 contacts →
	Strong evidence “AK9 Security and FM Solutions offers comprehensive security solutions for businesses, governmental organizations, and residential areas.” Source: RevenueBase Database · checked Sep 5, 2026
20	Gurkha Security Services	Indirect evidence	Farnborough, United KingdomHQ checked Sep 5, 2026	201-500	43 contacts →
	Indirect evidence “Feel safe and secure with us, whether it's for your business or your family we have got you covered.” Source: RevenueBase Database · checked Sep 5, 2026
21	Akon Security Services LTD	Partial evidence	Canterbury, United KingdomHQ checked Sep 5, 2026	201-500	42 contacts →
	Partial evidence “AKON SECURITY SERVICES LTD – Professional Security & Facilities in Kent Trusted by the Community.” Source: RevenueBase Database · checked Sep 5, 2026
22	Kestrel Guards Limited	Partial evidence	Southampton, United KingdomHQ checked Sep 5, 2026	51-200	40 contacts →
	Partial evidence “Kestrel Guards have been delivering security solutions to homes, businesses and property since 1988 with the local knowledge, infrastructure, experience, expertise and resources…” Source: RevenueBase Database · checked Sep 5, 2026
23	Venture Security	Partial evidence	Andover, United KingdomHQ checked Sep 5, 2026	51-200	39 contacts →
	Partial evidence “Venture Security was founded in Hampshire in 2006 and has grown from a small family venture into one of the UK’s highest-performing security providers.” Source: RevenueBase Database · checked Sep 5, 2026
24	Smartwatch Solutions LTD	Partial evidence	Leeds, United KingdomHQ checked Sep 5, 2026	51-200	36 contacts →
	Partial evidence “Established since 2006 SmartWatch offer a single supplier solution to your security and property management needs.” Source: RevenueBase Database · checked Sep 5, 2026
25	Doyle Security LTD	Partial evidence	Dodworth, United KingdomHQ checked Sep 5, 2026	51-200	36 contacts →
	Partial evidence “Doyle Security Ltd is a leading provider of professional security solutions, proudly safeguarding businesses, homeowners, and their properties for over four decades.” Source: RevenueBase Database · checked Sep 5, 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: residential 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 residential security companies.
Partial evidence: Its own public description names part of residential security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name residential 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 953 residential security companies based in the United Kingdom

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Residential security companies based in the United Kingdom at a glance

As of Sep 5, 2026

10.9%Verified-email coverage

6.2%Mobile-number coverage

9.5Average contacts per company

11-50Median size (employees)

17.8%Largest-city concentration · London

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

450

11-50

297

51-200

144

201-500

501-1,000

1,001-5,000

5,001-10,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

9300–30

5231–60

161–90

190–180

1180+

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 residential 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 “residential 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 residential 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 residential 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, 985 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 5, 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.

Residential security companies by metro

Residential security companies in London170
Residential security companies in Manchester29
Residential security companies in Birmingham25

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

RevenueBase identified 953 residential 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?

K4 Security - K4 Group, headquartered in Brentford Hounslow, tops this list with the largest team on record.

Which city has the most residential security companies?

London leads with 170 headquartered companies, followed by Manchester (29) and Birmingham (25).

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 985 verified decision-maker contacts tracked across these 953 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 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 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.