Company lists · Data refreshed November 2026

Top 25 Security clearance staffing agencies based in the United Kingdom

RevenueBase identified 106 company matches for security clearance staffing agencies associated with the United Kingdom as of November 2026 and tracks 1,353 professional contacts across them, including 494 with verified work emails. London is the largest hub.

This list covers company matches for security clearance staffing agencies 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 November 5, 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 Nov 5, 2026 How this list was built
106Companies
1,353Contacts tracked
494Verified emails
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The 25 largest security clearance staffing agencies based in the United Kingdom

Ranked by team size
Top 25 of 106 company matches for security clearance staffing agencies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 5, 2026201-500369 contacts →

Exact match

“Vivid Resourcing, a leading international talent solutions partner, connects you with in-demand technical professionals you need to flourish in the Tech, Engineering, Life…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchBromley, United KingdomHQ recorded Nov 5, 2026n/a94 contacts →

Exact match

“SecurityClearedJobs.com is a UK based job board designed for individuals working across all industry sectors who have obtained Security Clearance or who meet the criteria for…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchBristol, United KingdomHQ recorded Nov 5, 202651-20085 contacts →

Exact match

“SQEP provides security-cleared experts across defence, aerospace and critical infrastructure.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchBristol, United KingdomHQ recorded Nov 5, 202651-20059 contacts →

Exact match

“Sanderson Government & Defence was established over 20 years ago as a bespoke solution to a unique talent problem: sourcing and placing high-calibre professional talent to work…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchGuildford, United KingdomHQ recorded Nov 5, 202611-5056 contacts →

Exact match

“Damia Group is a trusted talent solutions partner with over 30 years of experience supporting security-cleared environments, including defence, government, space, and aerospace.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchWatford, United KingdomHQ recorded Nov 5, 202611-5046 contacts →

Exact match

“Red Sky empowers our partners with the flexible workforce solutions they need to navigate operational spikes.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchSlough, United KingdomHQ recorded Nov 5, 202611-5044 contacts →

Exact match

“Aviation Recruitment Network has been a trusted partner to the UK’s commercial aviation industry since As one of the largest providers of recruitment and vetting services in the…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchCaerphilly, United KingdomHQ recorded Nov 5, 202611-5040 contacts →

Exact match

“We empower businesses by solving one of their biggest challenges: finding the right people.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchBromley, United KingdomHQ recorded Nov 5, 202611-5035 contacts →

Exact match

“Join Triumph Consultants: A Leading Partner in Public Sector Recruitment Since Triumph Consultants Limited has grown from a specialist in local government services to a top…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchMaidenhead, United KingdomHQ recorded Nov 5, 2026n/a33 contacts →

Exact match

“As one of the oldest and established recruitment partners in this sector, we have a reputation 2nd to none in identifying the very best ex-military talent that is currently on the…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchLove Lane Industrial Estate, United KingdomHQ recorded Nov 5, 202611-5024 contacts →

Exact match

“As a trusted recruitment partner we aim to identify the very best ex-military and defence sector talent that is on the market.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-1021 contacts →

Exact match

“We connect top cybersecurity and eDiscovery talent at Iceberg Cyber Security with the most innovative companies worldwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchChristchurch, United KingdomHQ recorded Nov 5, 202611-5020 contacts →

Exact match

“Our Talent is Finding Yours – Exceptional Recruitment Since 2004 As a leading independent recruitment agency, we bring over 250 years of combined experience, with our senior…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchCheltenham, United KingdomHQ recorded Nov 5, 202611-5018 contacts →

Exact match

“InfoSec People is a specialist Cyber Security and Information Security recruitment business.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchCardiff, United KingdomHQ recorded Nov 5, 20261-1015 contacts →

Exact match

“Leading the charge across Aerospace, Defence, and Space.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchTunbridge Wells, United KingdomHQ recorded Nov 5, 202651-20014 contacts →

Exact match

“Founded in 2002, Tiger Resourcing Group is a privately-owned specialist recruitment firm.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-1013 contacts →

Exact match

“Founded in 2014, Palmer McCarthy has quickly become the first point of call for many employers and candidates within the security and facilities management industries.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchFarnham, United KingdomHQ recorded Nov 5, 202611-5013 contacts →

Exact match

“Evodia Ltd | Specialists in Security-Cleared Talent Evodia is a trusted recruitment partner to the UK’s most critical programmes.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-1013 contacts →

Exact match

“Here at Brampton Training and consultancy we specialise in finding the right person to fit you whether you regardless if your local government or private sector we're here to help.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchManchester, United KingdomHQ recorded Nov 5, 20261-1010 contacts →

Exact match

“A specialized agency dedicated to conducting rigorous background checks on teachers, catering specifically to the needs of educational institutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-109 contacts →

Exact match

“enteles Search was formed by Chris Meager and James Butler, two of the leading recruiters operating in the global security, resilience and investigative space.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchWeston, United KingdomHQ recorded Nov 5, 202611-509 contacts →

Exact match

“Adversa Recruitment are a national professional recruitment and staffing company, priding ourselves on the recruitment of skilled workers within the public sector, we are market…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchPortishead, United KingdomHQ recorded Nov 5, 20261-108 contacts →

Exact match

“Matrax is an experienced and innovative engineering and technical staffing company that specialises in providing the very best talent to government bodies and engineering clients…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchWembley, United KingdomHQ recorded Nov 5, 202611-505 contacts →

Exact match

“At REC Source, we are proud to be a certified leader in recruitment excellence, holding prestigious accreditations such as: ISO9001:2015 Certification GLAA Licence FCSA…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchBiggleswade, United KingdomHQ recorded Nov 5, 202611-504 contacts →

Exact match

“Ceema Recruitment was formed in 1996 as a result of Ceema customers’ needs for specialist technical staffing.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 106 security clearance staffing agencies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 494 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Security clearance staffing agencies based in the United Kingdom at a glance

As of Nov 5, 2026
36.5%Verified-email coverage
12.8Average contacts per company
1-10Median size (employees)
30.2%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
63
11-50
28
51-200
11
201-500
2
501-1,000
1

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 106 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 “security clearance staffing agencies” 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 494 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 November 5, 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.

Security clearance staffing agencies by metro

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 “security clearance staffing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many security clearance staffing agencies are there based in the United Kingdom?

RevenueBase identified 106 company matches for security clearance staffing agencies associated with the United Kingdom as of November 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?

Vivid Resourcing tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most security clearance staffing agencies?

London leads with 32 company records, followed by Bristol (6) and Manchester (6).

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 494 professional contacts with verified work emails tracked across these 106 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 November 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 106 security clearance staffing agencies based in the United Kingdom. Start with a free account, no credit card.

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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.