Company lists · Data refreshed September 2026

Top 13 Door security staff companies based in Leeds, United Kingdom

RevenueBase identified 42 door security staff companies headquartered in Leeds, United Kingdom as of September 2026 and tracks 1,718 professional contacts across them, including 296 with verified work emails. Across the United Kingdom, London is the largest hub for this category (467 companies); Leeds has 42.

This list covers door security staff companies headquartered in Leeds, 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 28, 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 28, 2026 86% judged on-target in blind review
42Companies
1,718Contacts tracked
296Verified emails
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The 13 largest door security staff companies based in Leeds, United Kingdom

Ranked by team size
Top 13 of 42 door security staff companies based in Leeds, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to door security staff 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceLeeds, United KingdomHQ checked Sep 28, 20261,001-5,000884 contacts →

Partial evidence

“Professional Security is one of the UK’s leading providers of security services, specialising in the hospitality and events sectors.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceLeeds, United KingdomHQ checked Sep 28, 2026501-1,000246 contacts →

Partial evidence

“First Response Group (FRG) is one of the leading security, risk and FM providers in the UK delivering manned security, technology solutions, building management and vacant…”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceLeeds, United KingdomHQ checked Sep 28, 202651-200157 contacts →

Partial evidence

“A premier provider of security products and services across England, Gough & Kelly was formed in 1988 to influence and inspire the security and electrical marketplace by providing…”

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidenceLeeds, United KingdomHQ checked Sep 28, 20261,001-5,00063 contacts →

Partial evidence

“Servo Group - Operating 24/7 nationwide a multi service provider - S.I.A Licensed Security Guards, Monitored CCTV, Vacant property management, Labour, Rail (all disciplines) PTS…”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceLeeds, United KingdomHQ checked Sep 28, 2026201-50056 contacts →

Partial evidence

“Controlled Space has been developed over the past 22 years to offer market leading security, stewarding and crowd management solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
6Partial evidenceLeeds, United KingdomHQ checked Sep 28, 202651-20040 contacts →

Partial evidence

“4 Site Security have specialised in providing professional security services to clients throughout the North of England for over 23 Years.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceLeeds, United KingdomHQ checked Sep 28, 202651-20036 contacts →

Partial evidence

“Established since 2006 SmartWatch offer a single supplier solution to your security and property management needs.”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceLeeds, United KingdomHQ checked Sep 28, 202611-5013 contacts →

Partial evidence

“We specialise in providing customised fire and security for businesses and public sector organisations across the UK.”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceLeeds, United KingdomHQ checked Sep 28, 202611-5012 contacts →

Partial evidence

“We specialise in Access Control, CCTV systems, Intruder Alarms, Door Entry Systems, Automated Barriers, Turnstiles & Fire Alarm Systems.”

Source: RevenueBase Database · checked Sep 28, 2026
10Partial evidenceLeeds, United KingdomHQ checked Sep 28, 202611-509 contacts →

Partial evidence

“Since 1969, TI Security has been a leading name in the world of security.”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceLeeds, United KingdomHQ checked Sep 28, 202611-508 contacts →

Partial evidence

“Keep Safe and Secure Ltd was established to provide transparent security and facility management services for both private and commercial clients.”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceLeeds, United KingdomHQ checked Sep 28, 20261-104 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceLeeds, United KingdomHQ checked Sep 28, 202651-2003 contacts →

Partial evidence

“We have been providing security services to private and public sector clients for over 14 years.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 13 of 42 door security staff companies based in Leeds, United Kingdom

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Door security staff companies based in Leeds, United Kingdom at a glance

As of Sep 28, 2026
17.2%Verified-email coverage
40.9Average contacts per company
11-50Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
14
11-50
13
51-200
8
201-500
2
501-1,000
1
1,001-5,000
3

Email recency for this list is measured across the whole United Kingdom list rather than for Leeds, so it is reported there. Company counts and contact totals on this page are exact for Leeds, over 42 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 door security staff 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 Leeds, United Kingdom whose own description of what they do matches “door security staff 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 door security staff 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 door security staff companies, and records with no verified work email. Companies headquartered outside Leeds 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, 296 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 28, 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.

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 door security staff 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 door security staff companies are there based in Leeds, United Kingdom?

RevenueBase identified 42 door security staff companies headquartered in Leeds, 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?

Professional Security, headquartered in Leeds, tops this list with the largest team on record.

Which city in the United Kingdom has the most door security staff companies?

London leads the United Kingdom with 467 headquartered companies, followed by Birmingham (68) and Manchester (57). Leeds has 42.

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 296 verified decision-maker contacts tracked across these 42 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 28, 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.