Company lists · Data refreshed September 2026

Top 25 Residential security companies based in the United Kingdom

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, how directly it supports the match, 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 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
953Companies
9,050Contacts tracked
985Verified emails
561Mobile numbers
Explore all 953 companies → Free signup · no credit card · 500 free credits

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. Evidence rates how directly each company's own description names residential security companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
K4 Security - K4 GroupPartial evidence
Hounslow, United KingdomHQ checked Sep 5, 2026201-50089

“For a better service and competitive price try K4 Security Services At K4 we offer the following: 1.”

Source: company website · checked Sep 5, 2026
2Whiteley, United KingdomHQ checked Sep 5, 2026501-1,00087

“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 5, 2026
3
Knight ProtectionPartial evidence
Camberley, United KingdomHQ checked Sep 5, 2026201-50081

“Knight Protection has nearly three decades’ experience providing bespoke protection and security solutions to private individuals, private estates, and corporate and public sector…”

Source: company website · checked Sep 5, 2026
4
ABELPartial evidence
Leicester, United KingdomHQ checked Sep 5, 202651-20070

“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: company website · checked Sep 5, 2026
5
Northern Security LTDPartial evidence
Carlisle, United KingdomHQ checked Sep 5, 2026201-50069

“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 5, 2026
6
Britsafe LimitedPartial evidence
Amy Johnson Way, United KingdomHQ checked Sep 5, 2026501-1,00066

“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: company website · checked Sep 5, 2026
7London, United KingdomHQ checked Sep 5, 2026201-50064

“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 5, 2026
8
Sentinel Group SecurityPartial evidence
Loughton, United KingdomHQ checked Sep 5, 2026201-50060

“Sentinel Group Security is a fast growing provider of all aspects of security personnel and manned security services operating across the United Kingdom.”

Source: company website · checked Sep 5, 2026
9Aldershot, United KingdomHQ checked Sep 5, 202651-20053

“Shield Security Services Limited was incorporated in 1986.”

Source: company website · checked Sep 5, 2026
10
The Protector GroupPartial evidence
Gateshead, United KingdomHQ checked Sep 5, 2026201-50052

“The Protector Group are a multi disciplined security company specializing in Manned Guarding, CCTV installation, maintenance and monitoring, Intruder and Fire alarm installation…”

Source: company website · checked Sep 5, 2026
11
Taybar Security LTDPartial evidence
Birmingham, United KingdomHQ checked Sep 5, 2026201-50052

“Taybar Security are a leading security services provider, that support a variety of businesses with their specific needs.”

Source: company website · checked Sep 5, 2026
12South Normanton, United KingdomHQ checked Sep 5, 2026201-50052

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

Source: company website · checked Sep 5, 2026
13
Portal SecurityPartial evidence
Cumbernauld, United KingdomHQ checked Sep 5, 2026201-50051

“Portal Security is a leading provider of security services dedicated to safeguarding individuals, businesses, and communities.”

Source: company website · checked Sep 5, 2026
14Glasgow, United KingdomHQ checked Sep 5, 202651-20049

“CSS is Scotland’s leading supplier and installer of domestic and commercial intruder and fire alarm systems.”

Source: company website · checked Sep 5, 2026
15Manchester, United KingdomHQ checked Sep 5, 202651-20047

“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: company website · checked Sep 5, 2026
16High Wycombe, United KingdomHQ checked Sep 5, 202651-20046

“Risk Management Security Services specialise in providing bespoke security to commercial, residential and Industrial premises.”

Source: company website · checked Sep 5, 2026
17
UK Protection LTDPartial evidence
London, United KingdomHQ checked Sep 5, 2026201-50045

“UK Protection is widely recognised as the premier supplier of security solutions to the Corporate, Jewellery and Luxury Retail industries across the UK.”

Source: company website · checked Sep 5, 2026
18
Phoenix FMSPartial evidence
Newcastle Upon Tyne, United KingdomHQ checked Sep 5, 2026201-50044

“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 5, 2026
19London, United KingdomHQ checked Sep 5, 2026501-1,00043

“AK9 Security and FM Solutions offers comprehensive security solutions for businesses, governmental organizations, and residential areas.”

Source: company website · checked Sep 5, 2026
20
Gurkha Security ServicesIndirect evidence
Farnborough, United KingdomHQ checked Sep 5, 2026201-50043

“Feel safe and secure with us, whether it's for your business or your family we have got you covered.”

Source: company website · checked Sep 5, 2026
21Canterbury, United KingdomHQ checked Sep 5, 2026201-50042

“AKON SECURITY SERVICES LTD – Professional Security & Facilities in Kent Trusted by the Community.”

Source: company website · checked Sep 5, 2026
22
Kestrel Guards LimitedPartial evidence
Southampton, United KingdomHQ checked Sep 5, 202651-20040

“Kestrel Guards have been delivering security solutions to homes, businesses and property since 1988 with the local knowledge, infrastructure, experience, expertise and resources…”

Source: company website · checked Sep 5, 2026
23
Venture SecurityPartial evidence
Andover, United KingdomHQ checked Sep 5, 202651-20039

“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: company website · checked Sep 5, 2026
24
Smartwatch Solutions LTDPartial evidence
Leeds, United KingdomHQ checked Sep 5, 202651-20036

“Established since 2006 SmartWatch offer a single supplier solution to your security and property management needs.”

Source: company website · checked Sep 5, 2026
25
Doyle Security LTDPartial evidence
Dodworth, United KingdomHQ checked Sep 5, 202651-20036

“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 5, 2026

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
11-50Median size (employees)
LondonLargest hub · 170 HQs
561Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
450
11-50
297
51-200
144
201-500
37
501-1,000
8
1,001-5,000
2
5,001-10,000
1

Verified emails by last verification

0–30
930
31–60
52
61–90
1
90–180
1
180+
1

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 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 “residential 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 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 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, 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.

Frequently asked

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 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.