Company lists · Data refreshed September 2026

Top 25 Alarm monitoring companies based in the United Kingdom

Name: Alarm monitoring 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 19, 2026 720 companies tracked

RevenueBase identified 720 company matches for alarm monitoring companies associated with the United Kingdom as of September 2026 and tracks 11,342 professional contacts across them, including 3,960 with verified work emails. London is the largest hub.

This list covers company matches for alarm monitoring companies associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 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 RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built

720Companies

11,342Contacts tracked

3,960Verified emails

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The 25 largest alarm monitoring companies based in the United Kingdom

Ranked by team size

Top 25 of 720 company matches for alarm monitoring companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Chubb Fire & Security	Exact match	Staines, United KingdomHQ recorded Sep 19, 2026	10001+	6,169 contacts →
	Exact match “Making the world a safer place.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Marlowe Fire & Security	Exact match	Manchester, United KingdomHQ recorded Sep 19, 2026	501-1,000	389 contacts →
	Exact match “Mitie Fire & Security is part of Mitie, the UK’s leading facilities management and professional services company, delivering integrated fire and security solutions that protect…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Taking Care	Exact match	Exeter, United KingdomHQ recorded Sep 19, 2026	51-200	106 contacts →
	Exact match “Taking Care has been providing personal alarm services for more than 30 years.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	K4 Security - K4 Group	Exact match	Hounslow, United KingdomHQ recorded Sep 19, 2026	201-500	89 contacts →
	Exact match “For a better service and competitive price try K4 Security Services At K4 we offer the following: 1.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	ABEL	Exact match	Leicester, United KingdomHQ recorded Sep 19, 2026	51-200	70 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Northern Security LTD	Exact match	Carlisle, United KingdomHQ recorded Sep 19, 2026	201-500	69 contacts →
	Exact match “Northern Security Ltd is a leading guarding, alarm response and electronic security business operating throughout the North of England and South West Scotland.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	City Security Services Part Of City Group Security	Exact match	London, United KingdomHQ recorded Sep 19, 2026	201-500	64 contacts →
	Exact match “City Security Services (CSS) have more than 25 years’ experience within the corporate security, public sector, education and social housing markets delivering manned guarding…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	ACE Fire And Security	Exact match	Bedford, United KingdomHQ recorded Sep 19, 2026	51-200	52 contacts →
	Exact match “Established in 1990, Ace Fire & Security is an end-to-end security, occupant safety, systems integration, monitoring and fire solutions specialist for commercial, industrial site…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Amthal Group Companies	Exact match	St Albans, United KingdomHQ recorded Sep 19, 2026	51-200	50 contacts →
	Exact match “We are Amthal Group Companies, one of the nation’s trusted commercial life safety and security technology partners for UK businesses.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	Security Monitoring Centres UK & Ireland	Exact match	Nottingham, United KingdomHQ recorded Sep 19, 2026	201-500	50 contacts →
	Exact match “A global security monitoring brand with sister companies in Holland, Belgium and Australia, we recognise that monitoring is an integral part of your business.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Connelly Security Systems LTD CSS LTD	Exact match	Glasgow, United KingdomHQ recorded Sep 19, 2026	51-200	49 contacts →
	Exact match “CSS is Scotland’s leading supplier and installer of domestic and commercial intruder and fire alarm systems.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Risk Management Security Services	Exact match	High Wycombe, United KingdomHQ recorded Sep 19, 2026	51-200	46 contacts →
	Exact match “Risk Management Security Services specialise in providing bespoke security to commercial, residential and Industrial premises.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	East Midlands Central Station Emcs Limited	Exact match	Chilwell, United KingdomHQ recorded Sep 19, 2026	51-200	45 contacts →
	Exact match “East Midlands Central Station (EMCS) Limited is the UK’s leading Alarm Receiving Centre.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Ak9 Security And FM Solutions LTD	Exact match	London, United KingdomHQ recorded Sep 19, 2026	501-1,000	43 contacts →
	Exact match “AK9 Security and FM Solutions offers comprehensive security solutions for businesses, governmental organizations, and residential areas.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Absolute Fire & Security Systems Limited	Exact match	Godalming, United KingdomHQ recorded Sep 19, 2026	11-50	40 contacts →
	Exact match “We are passionate about protecting the things that are important to our customers - their people or family, their properties, their possessions/contents and equipment.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	ARM Secure	Exact match	Warrington, United KingdomHQ recorded Sep 19, 2026	201-500	39 contacts →
	Exact match “ARM Secure is a new security company that is part of the Asset Protection Group.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Simplisafe UK	Exact match	Manchester, United KingdomHQ recorded Sep 19, 2026	11-50	36 contacts →
	Exact match “Being safe should be simple.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Doyle Security LTD	Exact match	Dodworth, United KingdomHQ recorded Sep 19, 2026	51-200	36 contacts →
	Exact match “Doyle Security Ltd is a leading provider of professional security solutions, proudly safeguarding businesses, homeowners, and their properties for over four decades.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Forward Security Services Limited	Exact match	Huddersfield, United KingdomHQ recorded Sep 19, 2026	11-50	36 contacts →
	Exact match “Based in Huddersfield, West Yorkshire.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	Zicam Systems Group LTD	Exact match	Bromsgrove, United KingdomHQ recorded Sep 19, 2026	11-50	32 contacts →
	Exact match “Zicam specialise in state-of-the-art security disciplines covering remotely monitored CCTV, Access Control, Fire Alarms, Permitter Protection and Intruder Alarm Systems.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Lincoln Security	Exact match	Lincoln, United KingdomHQ recorded Sep 19, 2026	11-50	32 contacts →
	Exact match “Founded in 1974, Lincoln Security Ltd.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Prosec UK	Exact match	Doncaster, United KingdomHQ recorded Sep 19, 2026	51-200	32 contacts →
	Exact match “Security Specialists A discreet, reliable and effective service Providing highly trained professional security guards and associated round the clock security services and for over…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	Guide Security	Exact match	Darwen, United KingdomHQ recorded Sep 19, 2026	51-200	30 contacts →
	Exact match “Many security companies pull together different providers to deliver a single service.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	Farsight Security Services LTD	Exact match	Peterborough, United KingdomHQ recorded Sep 19, 2026	51-200	29 contacts →
	Exact match “Farsight Security Services is a market-leading provider of remote monitoring and ARC services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Alert Alarms Family-Run Security Specialists Protecting Homes & Businesses Since 1982	Exact match	Redditch, United KingdomHQ recorded Sep 19, 2026	1-10	28 contacts →
	Exact match “Protecting homes and businesses since 1982.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “alarm monitoring companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 720 alarm monitoring companies based in the United Kingdom

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Alarm monitoring companies based in the United Kingdom at a glance

As of Sep 19, 2026

34.9%Verified-email coverage

15.8Average contacts per company

1-10Median size (employees)

9.6%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

425

11-50

211

51-200

201-500

501-1,000

1,001-5,000

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 720 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United Kingdom whose business descriptions match “alarm monitoring companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 3,960 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Alarm monitoring companies by metro

Alarm monitoring companies in London69

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “alarm monitoring companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many alarm monitoring companies are there based in the United Kingdom?

RevenueBase identified 720 company matches for alarm monitoring companies associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Chubb Fire & Security tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most alarm monitoring companies?

London leads with 69 company records, followed by Manchester (17) and Leicester (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,960 professional contacts with verified work emails tracked across these 720 companies; direct dials are available where recorded.

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 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.