Company lists · Data refreshed September 2026
Top 22 Security guard services based in London, United Kingdom
RevenueBase identified 359 security guard services headquartered in London, United Kingdom as of September 2026 and tracks 5,936 professional contacts across them, including 723 with verified work emails. London is the largest hub.
This list covers security guard services 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, how directly it supports the match, and when it was last checked. Data refreshed September 6, 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.
The 22 largest security guard services based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | TSS Total Security Services LTDPartial evidence | 1,451 | |||
“TSS is the UK’s largest retail specialist security company, employing over 7500+ security personnel.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 919 | ||||
“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 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | VPS Uk&iPartial evidence | 272 | |||
“VPS is Europe’s leading temporary security specialist, protecting vacant properties, remote sites, construction and infrastructure projects with tailored, risk-based security…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 232 | ||||
“Established in 1994, Interr is a specialist agency providing intelligent guarding, reception, remote monitoring & response and front of house solutions within the retail, hotel…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 137 | ||||
“The Keyholding Company are a tech-enabled mobile security services company, specialising in alarm response, mobile patrols, locks and unlocks, emergency and temporary guarding…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 85 | ||||
“At Servoca Secure Solutions, we take great pride in delivering a multi-service security business; offering a range of complementary products and services to both the public and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Lead Element Security GroupPartial evidence | 75 | |||
“We are Veteran Owned, Veteran Operated Security company based in London (HQ), with operation nationwide.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 71 | ||||
“KK Security was established in 2014 with the goal of keeping people safe.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 64 | ||||
“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 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 63 | ||||
“Vigilance is a pioneering security company with a proud military heritage.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 58 | ||||
“Black Diamond Security - Safeguarding Your World.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 45 | ||||
“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 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 43 | ||||
“AK9 Security and FM Solutions offers comprehensive security solutions for businesses, governmental organizations, and residential areas.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 37 | ||||
“Founded in 2015, BML Group is one of the UK's leading Security & Facilities Management providers, delivering tailored solutions that enhance operational efficiency and safety.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Systematic Security LTDPartial evidence | 31 | |||
“Systematic Security deliver static manned guarding, mobile patrols, open and lock ups, keyholding and emergency response requirements as well as Vacant Property inspections to a…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 30 | ||||
“Supplier of professional, high quality Security Guarding services-Corporate, retail and event security services-public and private function security-provision of Door Supervisors…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 17 | ||||
“As a security services provider, protecting people and assets is our top priority.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 16 | ||||
“SSG Support Services Group LTD is specialists in provision of Manned guarding Security Services, Door Supervision, Security Guarding, Out of Hours Support, Concierge, Front of…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Integrated Visual Protection LimitedPartial evidence | 16 | |||
“Integrated Visual Protection Limited (IVP) is a privately owned Company, which has been established since 2002, providing all types of Fire and Security Services to a variety of…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 14 | ||||
“Looking for security?” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 14 | ||||
“The definition of Amity is peaceful and friendly, as such we aim to live up to our name.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 14 | ||||
“Overview JAGUAR SECURITY LTD holds Security Industry Authority (SIA) approved contractor status for the provision of Security Guarding Service.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 22 of 359 security guard services based in London, United Kingdom
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Security guard services based in London, United Kingdom at a glance
As of Sep 6, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for London, over 359 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 security guard services, 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 London, United Kingdom whose own description of what they do matches “security guard services”. 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 security guard services, 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 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, 723 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 6, 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.
Security guard services by metro in the United Kingdom
- Security guard services in London359
- Security guard services in Birmingham55
- Security guard services in Manchester45
- Security guard services in Leeds28
Frequently asked
How many security guard services are there based in London, United Kingdom?
RevenueBase identified 359 security guard services 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?
TSS Total Security Services LTD, headquartered in London, tops this list with the largest team on record.
Which city has the most security guard services?
London leads with 359 headquartered companies, followed by Birmingham (55) and Manchester (45).
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 723 verified decision-maker contacts tracked across these 359 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 6, 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.
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