Company lists · Data refreshed September 2026

Top 25 Fire protection system companies based in London, United Kingdom

Name: Fire protection system companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 165 companies tracked

RevenueBase identified 165 fire protection system companies headquartered in London, United Kingdom as of September 2026 and tracks 963 professional contacts across them, including 361 with verified work emails. London is the largest hub.

This list covers fire protection system companies headquartered in London, 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 19, 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 19, 2026 86% judged on-target in blind review

165Companies

963Contacts tracked

361Verified emails

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The 25 largest fire protection system companies based in London, United Kingdom

Ranked by team size

Top 25 of 165 fire protection system companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to fire protection system 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	CLM Fireproofing	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	96 contacts →
	Strong evidence “Founded 36 years ago, CLM Fireproofing are industry-leading experts in passive fire protection and fire stopping.” Source: RevenueBase Database · checked Sep 19, 2026
2	Sensetech Systems LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	50 contacts →
	Strong evidence “Sensetech Systems Ltd is an LPS1014 Accredited independent Fire Alarm, Security and Structured Data Cabling Company.” Source: RevenueBase Database · checked Sep 19, 2026
3	Joule Group	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	37 contacts →
	Partial evidence “Joule Group is an independent firm of fire safety designers, engineers, consultants, technical specialists and digital solutions providers.” Source: RevenueBase Database · checked Sep 19, 2026
4	Reacton Fire Suppression	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	35 contacts →
	Strong evidence “Founded in 1996 Reacton Fire Suppression is a global leader in the research, design and manufacturing of pre-engineered automatic fire suppression systems.” Source: RevenueBase Database · checked Sep 19, 2026
5	Plumis	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	28 contacts →
	Strong evidence “Plumis is the manufacturer of multi award-winning Automist fire suppression systems.” Source: RevenueBase Database · checked Sep 19, 2026
6	Pstg Fire Protection	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	26 contacts →
	Strong evidence “At PSTG Fire Protection, we specialise in the installation and ongoing maintenance of Passive Fire Protection systems in London and throughout the UK, catering to your building’s…” Source: RevenueBase Database · checked Sep 19, 2026
7	Fire Integrity Limited	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	25 contacts →
	Strong evidence “Fire Integrity Ltd: Pioneering Passive Fire Protection Since 2005: At Fire Integrity, we see every building not just as a structure, but as a space teeming with life, deserving…” Source: RevenueBase Database · checked Sep 19, 2026
8	Firetecnics Systems	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	20 contacts →
	Strong evidence “Firetecnics Systems™ is one of the largest independent LPCB certificated fire safety company in the UK providing the widest range of fire safety maintenance and fire systems…” Source: RevenueBase Database · checked Sep 19, 2026
9	Adept Contracts LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	18 contacts →
	Strong evidence “12 years in Passive Fire Protection the Company has expanded in to a wide range of disciplines all associated with Fire Rated Construction works, supplying and installing for…” Source: RevenueBase Database · checked Sep 19, 2026
10	Bespoke Detection Services BDS Fire	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	15 contacts →
	Strong evidence “Welcome to BDS (Bespoke Detection Services Ltd) Fire & Life Safety Systems.” Source: RevenueBase Database · checked Sep 19, 2026
11	Griffin Fire	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Strong evidence “Griffin Fire is the premier fire protection company in Greater London.” Source: RevenueBase Database · checked Sep 19, 2026
12	Square Mile Fire & Security	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	13 contacts →
	Strong evidence “We are an independent business specialising in the delivery of fire systems, as well as a comprehensive range of security systems.” Source: RevenueBase Database · checked Sep 19, 2026
13	Securico Fire & Security	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	12 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
14	Fire Protection Systems	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “Did you know that.” Source: RevenueBase Database · checked Sep 19, 2026
15	Excel Fire LTD	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “At Excel Fire, we're proud to be a well-established team of competent experts who know our field inside and out.” Source: RevenueBase Database · checked Sep 19, 2026
16	Integrated Fire Safety Systems LTD	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	11 contacts →
	Strong evidence “At Integrated Fire Safety Systems we provide our clients with a level of confidence that leaves them assured that all aspects of their Active Fire Systems are well engineered…” Source: RevenueBase Database · checked Sep 19, 2026
17	Passive Fire Group	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	11 contacts →
	Strong evidence “Passive Fire Group specialise in passive fire protection services for both commercial and residential properties.” Source: RevenueBase Database · checked Sep 19, 2026
18	Reltech Solutions Limited	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	11 contacts →
	Strong evidence “RELTECH SOLUTIONS LIMITED is an Electronic Fire and Security company that provide design, installation and maintenance services on all aspects of security and life safety systems.” Source: RevenueBase Database · checked Sep 19, 2026
19	Gordonson Fire Protection Limited	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
20	Wrr-Uk	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Strong evidence “WRR-UK are a specialist Passive Fire Protection Sub-Contractor, with over 20 years experience understanding and realising our clients fire, blast and acoustic requirements.” Source: RevenueBase Database · checked Sep 19, 2026
21	Fire Plus Security	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “At Fire Plus Security we are proud to deliver tailored Fire & Security solutions to residential, commercial and public sector organisations throughout the UK & Europe.” Source: RevenueBase Database · checked Sep 19, 2026
22	London Fire And Security	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “London Fire & Security is an integrated and independent company dedicated to delivering bespoke services customized for a handpicked and sophisticated clientele.” Source: RevenueBase Database · checked Sep 19, 2026
23	Jems Risk Management	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	7 contacts →
	Partial evidence “We are a London‑based Fire Safety Management Company, fully Third‑Party Certified by BAFE and BM TRADA, delivering trusted, compliant, and end‑to‑end fire safety solutions across…” Source: RevenueBase Database · checked Sep 19, 2026
24	Chameleon Systems LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
25	Oracle FM	Strong evidence	London, United KingdomHQ checked Sep 19, 2026	11-50	7 contacts →
	Strong evidence “Oracle FM is a specialist fire safety and building compliance contractor, delivering passive fire protection, fire door remediation, compartmentation, and active fire systems…” Source: RevenueBase Database · checked Sep 19, 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: fire protection system 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 fire protection system companies.
Partial evidence: Its own public description names part of fire protection system companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fire protection system 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 165 fire protection system companies based in London, United Kingdom

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Fire protection system companies based in London, United Kingdom at a glance

As of Sep 19, 2026

37.5%Verified-email coverage

5.8Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 165 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 fire protection system 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 London, United Kingdom whose own description of what they do matches “fire protection system 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 fire protection system 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 fire protection system companies, and records with no verified work email. Companies headquartered outside London 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, 361 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 19, 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.

Fire protection system companies by metro in the United Kingdom

Fire protection system companies in London165
Fire protection system companies in Manchester45
Fire protection system 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 fire protection system 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 fire protection system companies are there based in London, United Kingdom?

RevenueBase identified 165 fire protection system companies headquartered in London, 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?

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

Which city has the most fire protection system companies?

London leads with 165 headquartered companies, followed by Manchester (45) 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 361 verified decision-maker contacts tracked across these 165 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 19, 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.