Company lists · Data refreshed September 2026

Top 25 Physical security consulting firms based in the United Kingdom

RevenueBase identified 850 physical security consulting firms headquartered in the United Kingdom as of September 2026 and tracks 9,855 professional contacts across them, including 1,778 with verified work emails and 657 with mobile numbers. London is the largest hub.

This list covers physical security consulting firms 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
850Companies
9,855Contacts tracked
1,778Verified emails
657Mobile numbers
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The 25 largest physical security consulting firms based in the United Kingdom

Ranked by team size
Top 25 of 850 physical security consulting firms 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 physical security consulting firms: 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
CIS Security LimitedPartial evidence
London, United KingdomHQ checked Sep 5, 20261,001-5,000919

“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: company website · checked Sep 5, 2026
2Watford, United KingdomHQ checked Sep 5, 202651-200116

“TSP has a reputation for providing enterprise security solutions, as well as excellent system integration standards and exceptional aftercare support, since its founding in 1988.”

Source: company website · checked Sep 5, 2026
3London, United KingdomHQ checked Sep 5, 2026201-50097

“As an independent IT security specialist, Caretower provide comprehensive solutions to individual problems, thus allowing our recommendations to be unbiased.”

Source: company website · checked Sep 5, 2026
4Whiteley, 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
5
Nationwide SecurityStrong evidence
St Albans, United KingdomHQ checked Sep 5, 202651-20081

“Nationwide Security providing both physical and electrical security services throughout the UK.”

Source: company website · checked Sep 5, 2026
6Plymouth, United KingdomHQ checked Sep 5, 2026201-50079

“Peregrine Risk Management is a leading provider of physical security, risk consultancy, travel risk management, security intelligence, and specialist training services.”

Source: company website · checked Sep 5, 2026
7High Wycombe, United KingdomHQ checked Sep 5, 202651-20074

“Saepio increase awareness, reduce risk and improve security in a continually evolving threat landscape.”

Source: company website · checked Sep 5, 2026
8Sandbach, United KingdomHQ checked Sep 5, 202651-20064

“We are a globally recognised leader in design-led physical security solutions.”

Source: company website · checked Sep 5, 2026
9
MDSECPartial evidence
Macclesfield, United KingdomHQ checked Sep 5, 202611-5061

“MDSec are a UK based consultancy with a passion for information security.”

Source: company website · checked Sep 5, 2026
10
Black Diamond SecurityPartial evidence
London, United KingdomHQ checked Sep 5, 2026201-50058

“Black Diamond Security - Safeguarding Your World.”

Source: company website · checked Sep 5, 2026
11Barnet, United KingdomHQ checked Sep 5, 2026501-1,00058

“In today’s advanced, interconnected world, protecting the infrastructure that allows society to function is crucial.”

Source: company website · checked Sep 5, 2026
12Aldershot, United KingdomHQ checked Sep 5, 202651-20053

“Shield Security Services Limited was incorporated in 1986.”

Source: company website · checked Sep 5, 2026
13South 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
14London, United KingdomHQ checked Sep 5, 202651-20051

“Established in Custom Intelligent Security is a technology driven ISO27001 & NSi Gold Accredited independent electronic security specialist with a proven track record of…”

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
16
CornerstoneStrong evidence
London, United KingdomHQ checked Sep 5, 202651-20044

“CornerStone is an award winning, independent, security and digital building consulting firm with headquarters in the UK.”

Source: company website · checked Sep 5, 2026
17
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
18London, 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
19
Atec SecurityPartial evidence
Wolverhampton, United KingdomHQ checked Sep 5, 202651-20040

“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 5, 2026
20
Minerva Elite LTDPartial evidence
Hereford, United KingdomHQ checked Sep 5, 202611-5040

“Minerva Elite is a niche consultancy providing high quality bespoke security and risk management solutions to its clients.”

Source: company website · checked Sep 5, 2026
21London, United KingdomHQ checked Sep 5, 202651-20039

“Gratte Brothers is an experienced provider of integrated security solutions, which are Built on Strong Values and ultimately deliver a measurable return on investment.”

Source: company website · checked Sep 5, 2026
22
Secforce LTDStrong evidence
London, United KingdomHQ checked Sep 5, 202611-5039

“SECFORCE are vendor independent offensive security specialists providing effective business risk intelligence and strategic security consulting.”

Source: company website · checked Sep 5, 2026
23
Clearview CommunicationsPartial evidence
Chelmsford, United KingdomHQ checked Sep 5, 202651-20038

“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 5, 2026
24
FireriteIndirect evidence
Caerphilly, United KingdomHQ checked Sep 5, 202651-20036

“At FireRite we’re passionate about life safety and asset protection.”

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 850 physical security consulting firms based in the United Kingdom

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Physical security consulting firms based in the United Kingdom at a glance

As of Sep 5, 2026
1-10Median size (employees)
LondonLargest hub · 215 HQs
657Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
477
11-50
241
51-200
100
201-500
16
501-1,000
6
1,001-5,000
2
5,001-10,000
1

Verified emails by last verification

0–30
1,677
31–60
96
61–90
3
90–180
0
180+
2

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 physical security consulting firms, 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 “physical security consulting firms”. 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 physical security consulting firms, 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, 1,778 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.

Physical security consulting firms by metro

  • Physical security consulting firms in London215

Frequently asked

How many physical security consulting firms are there based in the United Kingdom?

RevenueBase identified 850 physical security consulting firms 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?

CIS Security Limited, headquartered in London, tops this list with the largest team on record.

Which city has the most physical security consulting firms?

London leads with 215 headquartered companies, followed by Manchester (15) and Birmingham (12).

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 1,778 verified decision-maker contacts tracked across these 850 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.