Company lists · Data refreshed September 2026

Top 25 Quality assurance staffing firms based in the United Kingdom

RevenueBase identified 641 company matches for quality assurance staffing firms associated with the United Kingdom as of September 2026 and tracks 7,117 professional contacts across them, including 1,404 with verified work emails. London is the largest hub.

This list covers company matches for quality assurance staffing firms 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 29, 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 29, 2026 How this list was built
641Companies
7,117Contacts tracked
1,404Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest quality assurance staffing firms based in the United Kingdom

Ranked by team size
Top 25 of 641 company matches for quality assurance staffing firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchNorthampton, United KingdomHQ recorded Sep 29, 20261,001-5,000558 contacts →

Exact match

“We’re THE RECRUITMENT Co.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchSutton, United KingdomHQ recorded Sep 29, 2026201-500355 contacts →

Exact match

“A24 Group is a leading international provider of medical staffing and personnel management services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchCity Of London, United KingdomHQ recorded Sep 29, 202651-200203 contacts →

Exact match

“At Proclinical Staffing, our life science recruitment services support our partners with permanent and contract vacancies by connecting them with specialist talent across the…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchGlasgow, United KingdomHQ recorded Sep 29, 2026n/a190 contacts →

Exact match

“Welcome to HRC Recruitment Looking for a job in Glasgow, Edinburgh or the rest of Scotland?”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchLuton, United KingdomHQ recorded Sep 29, 2026201-500161 contacts →

Exact match

“With over 30 years experience of serving clients Internationally and filling their IT and Life Sciences staffing vacancies, both Contract and Permanent, you can be assured we will…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchSutton, United KingdomHQ recorded Sep 29, 202651-200153 contacts →

Exact match

“Ambition 24hours – Leading the Way in 24/7 Healthcare Staffing For nearly 28 years, Ambition 24hours has been at the forefront of healthcare staffing, providing reliable…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchDartford, United KingdomHQ recorded Sep 29, 202611-50142 contacts →

Exact match

“Experience in both temporary and permanent recruitment, Swanstaff Ltd stands as a beacon of expertise, dedication, and success in matching top talent with exceptional…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 29, 202651-200134 contacts →

Exact match

“BMSL was formed in 1996 to provide specialist support to the construction industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 29, 2026201-500125 contacts →

Exact match

“Skilliantech Ltd, trading as “SkillRecruit”, is a specialist IT and Engineering recruitment agency delivering comprehensive coverage of recruitment services across all industries…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchGloucester, United KingdomHQ recorded Sep 29, 202651-200116 contacts →

Exact match

“In operation since 1977, our reputation for excellence has come from providing Companies and Individuals with an outstanding recruitment service to suit their every need.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchNorwich, United KingdomHQ recorded Sep 29, 202651-20091 contacts →

Exact match

“Select Recruitment was established in 1995 to provide a high quality and personal staffing service to clients and candidates.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchManchester, United KingdomHQ recorded Sep 29, 202611-5088 contacts →

Exact match

“Careermakers Recruitment is amongst the top recruiters in the country.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 29, 202611-5070 contacts →

Exact match

“Qniverse is your trusted Quality Assurance service partner that stands at the forefront of a paradigm shift in QA by redefining quality.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchPoole, United KingdomHQ recorded Sep 29, 202651-20066 contacts →

Exact match

“Dorset's leading local independent recruitment agency.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchNorthampton, United KingdomHQ recorded Sep 29, 202611-5062 contacts →

Exact match

“We have a clear vision – “We aim to challenge and transform the recruitment industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchReading, United KingdomHQ recorded Sep 29, 202611-5058 contacts →

Exact match

“Howard Finley Ltd was founded in 2016 by a team of experienced consultants with the aim of delivering a bespoke high quality recruitment service focused on the needs our clients…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchWarrington, United KingdomHQ recorded Sep 29, 202611-5055 contacts →

Exact match

“Integra People is a leading national recruitment consultancy providing temporary, contract and permanent resourcing solutions to the Construction, IT & Telecoms, Engineering…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchHull, United KingdomHQ recorded Sep 29, 202651-20054 contacts →

Exact match

“Our People Are Your People.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchChippenham, United KingdomHQ recorded Sep 29, 202611-5054 contacts →

Exact match

“24-7 Staffing was formed in 2004 in Chippenham, as an independently owned recruitment business, who passionately strive to deliver your ideal staffing solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchTemple, United KingdomHQ recorded Sep 29, 202651-20053 contacts →

Exact match

“X4 Technology partner with businesses across the entire technology spectrum, from early-stage R&D to commercial enterprises to provide world-class talent solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 29, 2026201-50051 contacts →

Exact match

“In a highly technical industry of Information Technology, Warriorz Technologies Ltd is paving the way in Human Resource and Software consulting across the globe.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchFrimley, United KingdomHQ recorded Sep 29, 202651-20049 contacts →

Exact match

“Powering Global STEM | Discover the Power of a Partner.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchKeighley, United KingdomHQ recorded Sep 29, 202611-5049 contacts →

Exact match

“Rotherwood Recruitment are established multi-sector recruitment specialists operating across West & North Yorkshire and East Lancashire.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchAbingdon, United KingdomHQ recorded Sep 29, 202611-5047 contacts →

Exact match

“ZigZag QA is your trusted worldwide quality leader, offering true global reach and unrivaled expertise to reduce risk and efforts.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchPortsmouth, United KingdomHQ recorded Sep 29, 202611-5045 contacts →

Exact match

“Blackfield Associates works in partnership with our clients to identify and deliver the right staffing solution to support contract, permanent and managed work programmes.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 641 quality assurance staffing firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 1,404 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Quality assurance staffing firms based in the United Kingdom at a glance

As of Sep 29, 2026
19.7%Verified-email coverage
11.1Average contacts per company
1-10Median size (employees)
24.3%Largest-city concentration · London
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
331
11-50
192
51-200
89
201-500
15
501-1,000
3
1,001-5,000
5
5,001-10,000
2
10001+
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 641 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 “quality assurance staffing firms” 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 1,404 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 29, 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.

Quality assurance staffing firms 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 “quality assurance staffing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many quality assurance staffing firms are there based in the United Kingdom?

RevenueBase identified 641 company matches for quality assurance staffing firms 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?

The Recruitment CO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most quality assurance staffing firms?

London leads with 156 company records, followed by Manchester (16) and Birmingham (12).

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 1,404 professional contacts with verified work emails tracked across these 641 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 29, 2026.

Ready to reach these companies? Verified emails and direct dials for all 641 quality assurance staffing firms based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

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.