Company lists · Data refreshed September 2026
Top 11 Security companies based in Leicester, United Kingdom
This directory lists 37 security companies based in Leicester, United Kingdom, with 202 contacts and 56 email addresses for business research and outreach. As of September 2026, London is the single most-represented city among the companies on the list.
Security companies provide services, systems, or products that protect people, property, facilities, data, networks, or other assets from security threats. This list covers companies that provide security products or services, including physical security, cybersecurity, monitoring, access control, risk management, and related protection solutions. Ranked by team size, largest first. Data current as of 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 11 largest security companies based in Leicester, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 70 | ||||
“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 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | Fireserv UKStrong evidence | 11 | |||
“Midlands based Fire & Security company offering, maintenance and 24/7 monitoring, to full system design, installation & commissioning of Fire & Security Systems.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | Squire GroupStrong evidence | 11 | |||
“Squire Group is a family-owned fire, safety and security company operating nationwide, based in the heart of Leicestershire, with over 40 years of experience.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 7 | ||||
“Established in 2020, Midlands Protection delivers bespoke security solutions to both residential and commercial clients.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | Rossells Security LTDStrong evidence | 6 | |||
“Rossells delivers fully integrated Fire and Security systems throughout Leicester, Leicestershire, and the neighbouring counties.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | Squire AlarmsIndirect evidence | 6 | |||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Wilson Alarm Systems LimitedIndirect evidence | 4 | |||
“Since 1988, Wilson Alarms has helped protect homes and businesses across the Midlands-earning trust through a service that’s personal, professional and genuinely dependable, from…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Octagon Risk ManagementStrong evidence | 4 | |||
“Octagon Risk Management are a leading provider of security services throughout the UK.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | LNS Fire And Security LimitedStrong evidence | 3 | |||
“LNS FIRE AND SECURITY LIMITED is a construction company based out of United Kingdom.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | Detector Fire And SecurityStrong evidence | 1 | |||
“We are a one stop shop for all of your Fire and Security needs.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1 | ||||
“We are committed to serving our clients protecting their assets from crime using the latest, technologies, methods, techniques and physical security to significantly reduce…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 11 of 37 security companies based in Leicester, United Kingdom
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Security companies based in Leicester, 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 Leicester, over 37 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 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 Leicester, United Kingdom whose own description of what they do matches “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 security companies, and records with no verified work email. Companies headquartered outside Leicester 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, 56 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 companies by metro in the United Kingdom
- Security companies in London909
- Security companies in Manchester122
- Security companies in Birmingham108
- Security companies in Glasgow64
- Security companies in Leeds64
- Security companies in Bristol60
- Security companies in Liverpool48
- Security companies in Leicester37
- Security companies in Cardiff35
- Security companies in Belfast33
- Security companies in Nottingham33
- Security companies in Sheffield32
- Security companies in Ilford30
- Security companies in Southampton30
- Security companies in Luton29
- Security companies in Bradford27
- Security companies in Northampton25
Frequently asked
How many security companies are based in Leicester, United Kingdom?
RevenueBase counts 37 security companies based in Leicester, United Kingdom on this list.
How many contacts and email addresses are available for security companies?
The list includes 202 contacts and 56 email addresses for security companies.
Which city has the most security companies on the list?
London is the single most-represented city among the companies on the list.
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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.