Company lists · Data refreshed September 2026
Top 25 International HR outsourcing companies based in the United Kingdom
RevenueBase identified 1,124 company matches for international HR outsourcing companies associated with the United Kingdom as of September 2026 and tracks 16,674 professional contacts across them, including 4,776 with verified work emails. London is the largest hub.
This list covers company matches for international HR outsourcing companies 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 28, 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 25 largest international HR outsourcing companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,734 contacts → | ||||
Exact match “At Alight | NGA Human Resources our mission is to make HR work better.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 1,465 contacts → | ||||
Exact match “Zellis helps organisations unlock better outcomes by creating exceptional experiences for their people.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 870 contacts → | ||||
Exact match “At Oliver James, we deliver flexible hiring solutions tailored to your business needs across financial services, professional services, commerce & industry.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 543 contacts → | ||||
Exact match “We operate at the critical intersection of people, place and performance.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 532 contacts → | ||||
Exact match “We are a leading service provider of Human Capital Management (HCM) solutions across Europe, serving more than 1.5 million employees monthly with an annual revenue of 78 million…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 507 contacts → | ||||
Exact match “Established in 1983, Frontier Software is an acknowledged leader in the provision of a global HR & Payroll software solution.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 400 contacts → | ||||
Exact match “Our award winning HR and health & safety services free you from workforce admin and help keep you on the right side of the law.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 377 contacts → | ||||
Exact match “Hirexa Solutions is a leading group of companies committed to delivering exceptional services to Fortune 500 clients worldwide.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 333 contacts → | ||||
Exact match “Ubique Systems is a fast growing multifaceted organization which offers a comprehensive array of outsourcing and consulting services for its customers, including recruitment…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 311 contacts → | ||||
Exact match “GI Outsourcing is a UK-based accountants outsourcing firm.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 278 contacts → | ||||
Exact match “Project People provides complete talent acquisition and management solutions at a global level whilst maintaining a flexible and localised approach.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 12 | 219 contacts → | ||||
Exact match “We provide HR, payroll, benefits and learning solutions for UK organisations with employees.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 150 contacts → | ||||
Exact match “At Potentiam, we help businesses unlock growth by building nearshore and offshore teams that empower organisations to scale faster, operate smarter and stay ahead of the…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 148 contacts → | ||||
Exact match “Proudly based in the North East, our multi award-winning Payroll & HR service has been delivering professional payroll and HR solutions for over 40 years.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 129 contacts → | ||||
Exact match “Overview LACE Partners is trusted advisors to HR and business leaders navigating complex workforce challenges.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 16 | 128 contacts → | ||||
Exact match “Newforce provides global recruitment and workforce staffing solutions that help organizations access skilled talent across multiple markets.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 124 contacts → | ||||
Exact match “Omnipresent was acquired by Deel in October of 2025.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 120 contacts → | ||||
Exact match “Talent Solutions combines ManpowerGroup's leading global offerings RPO, TAPFIN-MSP and Right Management to provide end-to-end, data-driven capabilities across the talent lifecycle.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 103 contacts → | ||||
Exact match “we redefine business process outsourcing, empowering companies to broaden their horizons.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 90 contacts → | ||||
Exact match “Imagining a global workforce is simple.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 21 | 84 contacts → | ||||
Exact match “Envertiz Consultancy bridges global talent with leading employers across healthcare, IT, engineering, finance, and other key sectors.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 22 | 74 contacts → | ||||
Exact match “SAMpeople, SAMpeople Recruit and SAMpeople Payroll” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 23 | 70 contacts → | ||||
Exact match “Invedus Outsourcing is a remote employees outsourcing company.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 24 | 67 contacts → | ||||
Exact match “PayEscape is one of the UK’s fastest growing outsourced Payroll, HR and Time Management providers.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 25 | 66 contacts → | ||||
Exact match “QORMOTHO is a global outsourcing company.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “international HR outsourcing companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 1,124 international HR outsourcing companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 4,776 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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International HR outsourcing companies based in the United Kingdom at a glance
As of Sep 28, 2026Companies by employee count
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 1,124 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 “international HR outsourcing companies” 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 4,776 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 28, 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.
International HR outsourcing companies 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 “international HR outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many international HR outsourcing companies are there based in the United Kingdom?
RevenueBase identified 1,124 company matches for international HR outsourcing companies 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?
NGA Human Resources, An Alight Company tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most international HR outsourcing companies?
London leads with 318 company records, followed by Manchester (27) and Bristol (18).
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 4,776 professional contacts with verified work emails tracked across these 1,124 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 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,124 international HR outsourcing companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
International HR outsourcing companies by geography
- International HR outsourcing companies based in Buenos Aires, Argentina
- International HR outsourcing companies based in Brisbane, Australia
- International HR outsourcing companies based in Melbourne, Australia
- International HR outsourcing companies based in Sydney, Australia
- International HR outsourcing companies based in Dhaka, Bangladesh
- International HR outsourcing companies based in Campinas, Brazil
- International HR outsourcing companies based in Curitiba, Brazil
- International HR outsourcing companies based in Porto Alegre, Brazil
- International HR outsourcing companies based in Rio De Janeiro, Brazil
- International HR outsourcing companies based in Sao Paulo, Brazil
- International HR outsourcing companies based in Sofia, Bulgaria
- International HR outsourcing companies based in Calgary, Canada
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- International HR outsourcing companies based in Buenos Aires, Argentina
- International HR outsourcing companies based in Brisbane, Australia
- International HR outsourcing companies based in Melbourne, Australia
- International HR outsourcing companies based in Sydney, Australia
- International HR outsourcing companies based in Dhaka, Bangladesh
- International HR outsourcing companies based in Campinas, Brazil
Company intelligence · public preview
Top 25 international HR outsourcing companies based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,124 matching company records for international HR outsourcing companies based in the United Kingdom, with 16,674 tracked contacts and 4,776 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 international HR outsourcing companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,734 contacts → |
“At Alight | NGA Human Resources our mission is to make HR work better.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Zelliszellis.comHQ: Bristol, United KingdomReported employees: 1,001-5,000 | Bristol, United Kingdom | 1,001-5,000 | Exact match | 1,465 contacts → |
“Zellis helps organisations unlock better outcomes by creating exceptional experiences for their people.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Oliver Jamesoliverjames.comHQ: Manchester, United KingdomReported employees: 501-1,000 | Manchester, United Kingdom | 501-1,000 | Exact match | 870 contacts → |
“At Oliver James, we deliver flexible hiring solutions tailored to your business needs across financial services, professional services, commerce & industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Topsourcetopsourceworldwide.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 543 contacts → |
“We operate at the critical intersection of people, place and performance.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  ROCzalaris.comHQ: Weybridge, United KingdomReported employees: 501-1,000 | Weybridge, United Kingdom | 501-1,000 | Exact match | 532 contacts → |
“We are a leading service provider of Human Capital Management (HCM) solutions across Europe, serving more than 1.5 million employees monthly with an annual revenue of 78 million…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Frontier Softwarefrontiersoftware.comHQ: Lightwater, United KingdomReported employees: 201-500 | Lightwater, United Kingdom | 201-500 | Exact match | 507 contacts → |
“Established in 1983, Frontier Software is an acknowledged leader in the provision of a global HR & Payroll software solution.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Cronercroner.co.ukHQ: Wheatfield Way, United KingdomReported employees: 201-500 | Wheatfield Way, United Kingdom | 201-500 | Exact match | 400 contacts → |
“Our award winning HR and health & safety services free you from workforce admin and help keep you on the right side of the law.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Hirexa Solutionshirexa.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 377 contacts → |
“Hirexa Solutions is a leading group of companies committed to delivering exceptional services to Fortune 500 clients worldwide.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Ubique Systemsubique-systems.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 333 contacts → |
“Ubique Systems is a fast growing multifaceted organization which offers a comprehensive array of outsourcing and consulting services for its customers, including recruitment…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  GI Outsourcinggioutsourcing.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 311 contacts → |
“GI Outsourcing is a UK-based accountants outsourcing firm.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Project Peopleprojectpeople.comHQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 278 contacts → |
“Project People provides complete talent acquisition and management solutions at a global level whilst maintaining a flexible and localised approach.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  CIPHRciphr.comHQ: Reading, United KingdomReported employees: 201-500 | Reading, United Kingdom | 201-500 | Exact match | 219 contacts → |
“We provide HR, payroll, benefits and learning solutions for UK organisations with employees.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Potentiam LTDpotentiam.co.ukHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 150 contacts → |
“At Potentiam, we help businesses unlock growth by building nearshore and offshore teams that empower organisations to scale faster, operate smarter and stay ahead of the…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Cintra HR & Payroll Servicescintra.co.ukHQ: Newcastle Upon Tyne, United KingdomReported employees: 51-200 | Newcastle Upon Tyne, United Kingdom | 51-200 | Exact match | 148 contacts → |
“Proudly based in the North East, our multi award-winning Payroll & HR service has been delivering professional payroll and HR solutions for over 40 years.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Lace Partnerslacepartners.comHQ: South Bank, United KingdomReported employees: 51-200 | South Bank, United Kingdom | 51-200 | Exact match | 129 contacts → |
“Overview LACE Partners is trusted advisors to HR and business leaders navigating complex workforce challenges.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Newforce Global Servicesnewforceltd.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 128 contacts → |
“Newforce provides global recruitment and workforce staffing solutions that help organizations access skilled talent across multiple markets.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Omnipresentdeel.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 124 contacts → |
“Omnipresent was acquired by Deel in October of 2025.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Talent Solutions UKmpgtalentsolutions.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 120 contacts → |
“Talent Solutions combines ManpowerGroup's leading global offerings RPO, TAPFIN-MSP and Right Management to provide end-to-end, data-driven capabilities across the talent lifecycle.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Solvex Solutionssolvex-solutions.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 103 contacts → |
“we redefine business process outsourcing, empowering companies to broaden their horizons.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Mauve Groupmauvegroup.comHQ: York, United KingdomReported employees: 51-200 | York, United Kingdom | 51-200 | Exact match | 90 contacts → |
“Imagining a global workforce is simple.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Envertiz Consultancyenvertiz.comHQ: Aberdeen, United KingdomReported employees: 51-200 | Aberdeen, United Kingdom | 51-200 | Exact match | 84 contacts → |
“Envertiz Consultancy bridges global talent with leading employers across healthcare, IT, engineering, finance, and other key sectors.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Sampeoplesampeople.co.ukHQ: Calder Grove, United KingdomReported employees: 51-200 | Calder Grove, United Kingdom | 51-200 | Exact match | 74 contacts → |
“SAMpeople, SAMpeople Recruit and SAMpeople Payroll” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Invedus Outsourcinginvedus.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 70 contacts → |
“Invedus Outsourcing is a remote employees outsourcing company.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Payescape LTDpayescape.comHQ: Northern Ireland, United KingdomReported employees: 51-200 | Northern Ireland, United Kingdom | 51-200 | Exact match | 67 contacts → |
“PayEscape is one of the UK’s fastest growing outsourced Payroll, HR and Time Management providers.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Qormothoqormotho.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 66 contacts → |
“QORMOTHO is a global outsourcing company.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,124 company matches
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International HR outsourcing companies: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,119 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 1,124 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
International HR outsourcing companies by metro
Questions about this company list
What does Exact match mean for international HR outsourcing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many international HR outsourcing companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 1,124 matching company records, 16,674 tracked contacts and 4,776 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
International HR outsourcing companies by geography
- International HR outsourcing companies based in Buenos Aires, Argentina
- International HR outsourcing companies based in Brisbane, Australia
- International HR outsourcing companies based in Melbourne, Australia
- International HR outsourcing companies based in Sydney, Australia
- International HR outsourcing companies based in Dhaka, Bangladesh
- International HR outsourcing companies based in Campinas, Brazil
- International HR outsourcing companies based in Curitiba, Brazil
- International HR outsourcing companies based in Porto Alegre, Brazil
- International HR outsourcing companies based in Rio De Janeiro, Brazil
- International HR outsourcing companies based in Sao Paulo, Brazil
- International HR outsourcing companies based in Sofia, Bulgaria
- International HR outsourcing companies based in Calgary, Canada
Cite this list
RevenueBase Data Team. Top 25 international HR outsourcing companies based in the United Kingdom. Snapshot: September 28, 2026. https://revenuebase.ai/companies/international-hr-outsourcing-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- International HR outsourcing companies based in Buenos Aires, Argentina
- International HR outsourcing companies based in Brisbane, Australia
- International HR outsourcing companies based in Melbourne, Australia
- International HR outsourcing companies based in Sydney, Australia
- International HR outsourcing companies based in Dhaka, Bangladesh
- International HR outsourcing companies based in Campinas, Brazil
Company intelligence · public preview
Top 25 international HR outsourcing companies based in the United Kingdom
RevenueBase records 1,124 matching company records for international HR outsourcing companies based in the United Kingdom, with 16,674 tracked contacts and 4,776 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 international HR outsourcing companies based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,734 contacts → |
“At Alight | NGA Human Resources our mission is to make HR work better.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Zelliszellis.com HQ: Bristol, United KingdomReported employees: 1,001-5,000 | Bristol, United Kingdom | 1,001-5,000 | Exact match | 1,465 contacts → |
“Zellis helps organisations unlock better outcomes by creating exceptional experiences for their people.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Oliver Jamesoliverjames.com HQ: Manchester, United KingdomReported employees: 501-1,000 | Manchester, United Kingdom | 501-1,000 | Exact match | 870 contacts → |
“At Oliver James, we deliver flexible hiring solutions tailored to your business needs across financial services, professional services, commerce & industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Topsourcetopsourceworldwide.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 543 contacts → |
“We operate at the critical intersection of people, place and performance.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | ROCzalaris.com HQ: Weybridge, United KingdomReported employees: 501-1,000 | Weybridge, United Kingdom | 501-1,000 | Exact match | 532 contacts → |
“We are a leading service provider of Human Capital Management (HCM) solutions across Europe, serving more than 1.5 million employees monthly with an annual revenue of 78 million…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Frontier Softwarefrontiersoftware.com HQ: Lightwater, United KingdomReported employees: 201-500 | Lightwater, United Kingdom | 201-500 | Exact match | 507 contacts → |
“Established in 1983, Frontier Software is an acknowledged leader in the provision of a global HR & Payroll software solution.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Cronercroner.co.uk HQ: Wheatfield Way, United KingdomReported employees: 201-500 | Wheatfield Way, United Kingdom | 201-500 | Exact match | 400 contacts → |
“Our award winning HR and health & safety services free you from workforce admin and help keep you on the right side of the law.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Hirexa Solutionshirexa.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 377 contacts → |
“Hirexa Solutions is a leading group of companies committed to delivering exceptional services to Fortune 500 clients worldwide.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Ubique Systemsubique-systems.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 333 contacts → |
“Ubique Systems is a fast growing multifaceted organization which offers a comprehensive array of outsourcing and consulting services for its customers, including recruitment…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | GI Outsourcinggioutsourcing.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 311 contacts → |
“GI Outsourcing is a UK-based accountants outsourcing firm.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Project Peopleprojectpeople.com HQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 278 contacts → |
“Project People provides complete talent acquisition and management solutions at a global level whilst maintaining a flexible and localised approach.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | CIPHRciphr.com HQ: Reading, United KingdomReported employees: 201-500 | Reading, United Kingdom | 201-500 | Exact match | 219 contacts → |
“We provide HR, payroll, benefits and learning solutions for UK organisations with employees.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Potentiam LTDpotentiam.co.uk HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 150 contacts → |
“At Potentiam, we help businesses unlock growth by building nearshore and offshore teams that empower organisations to scale faster, operate smarter and stay ahead of the…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Cintra HR & Payroll Servicescintra.co.uk HQ: Newcastle Upon Tyne, United KingdomReported employees: 51-200 | Newcastle Upon Tyne, United Kingdom | 51-200 | Exact match | 148 contacts → |
“Proudly based in the North East, our multi award-winning Payroll & HR service has been delivering professional payroll and HR solutions for over 40 years.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Lace Partnerslacepartners.com HQ: South Bank, United KingdomReported employees: 51-200 | South Bank, United Kingdom | 51-200 | Exact match | 129 contacts → |
“Overview LACE Partners is trusted advisors to HR and business leaders navigating complex workforce challenges.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Newforce Global Servicesnewforceltd.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 128 contacts → |
“Newforce provides global recruitment and workforce staffing solutions that help organizations access skilled talent across multiple markets.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Omnipresentdeel.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 124 contacts → |
“Omnipresent was acquired by Deel in October of 2025.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Talent Solutions UKmpgtalentsolutions.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 120 contacts → |
“Talent Solutions combines ManpowerGroup's leading global offerings RPO, TAPFIN-MSP and Right Management to provide end-to-end, data-driven capabilities across the talent lifecycle.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Solvex Solutionssolvex-solutions.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 103 contacts → |
“we redefine business process outsourcing, empowering companies to broaden their horizons.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Mauve Groupmauvegroup.com HQ: York, United KingdomReported employees: 51-200 | York, United Kingdom | 51-200 | Exact match | 90 contacts → |
“Imagining a global workforce is simple.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Envertiz Consultancyenvertiz.com HQ: Aberdeen, United KingdomReported employees: 51-200 | Aberdeen, United Kingdom | 51-200 | Exact match | 84 contacts → |
“Envertiz Consultancy bridges global talent with leading employers across healthcare, IT, engineering, finance, and other key sectors.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Sampeoplesampeople.co.uk HQ: Calder Grove, United KingdomReported employees: 51-200 | Calder Grove, United Kingdom | 51-200 | Exact match | 74 contacts → |
“SAMpeople, SAMpeople Recruit and SAMpeople Payroll” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Invedus Outsourcinginvedus.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 70 contacts → |
“Invedus Outsourcing is a remote employees outsourcing company.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Payescape LTDpayescape.com HQ: Northern Ireland, United KingdomReported employees: 51-200 | Northern Ireland, United Kingdom | 51-200 | Exact match | 67 contacts → |
“PayEscape is one of the UK’s fastest growing outsourced Payroll, HR and Time Management providers.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Qormothoqormotho.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 66 contacts → |
“QORMOTHO is a global outsourcing company.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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International HR outsourcing companies: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,119 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 1,124 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
International HR outsourcing companies by metro
Questions about this company list
What does Exact match mean for international HR outsourcing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many international HR outsourcing companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 1,124 matching company records, 16,674 tracked contacts and 4,776 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
International HR outsourcing companies by geography
- International HR outsourcing companies based in Buenos Aires, Argentina
- International HR outsourcing companies based in Brisbane, Australia
- International HR outsourcing companies based in Melbourne, Australia
- International HR outsourcing companies based in Sydney, Australia
- International HR outsourcing companies based in Dhaka, Bangladesh
- International HR outsourcing companies based in Campinas, Brazil
- International HR outsourcing companies based in Curitiba, Brazil
- International HR outsourcing companies based in Porto Alegre, Brazil
- International HR outsourcing companies based in Rio De Janeiro, Brazil
- International HR outsourcing companies based in Sao Paulo, Brazil
- International HR outsourcing companies based in Sofia, Bulgaria
- International HR outsourcing companies based in Calgary, Canada
Cite this list
RevenueBase Data Team. Top 25 international HR outsourcing companies based in the United Kingdom. Snapshot: September 28, 2026. https://revenuebase.ai/companies/international-hr-outsourcing-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- International HR outsourcing companies based in Buenos Aires, Argentina
- International HR outsourcing companies based in Brisbane, Australia
- International HR outsourcing companies based in Melbourne, Australia
- International HR outsourcing companies based in Sydney, Australia
- International HR outsourcing companies based in Dhaka, Bangladesh
- International HR outsourcing companies based in Campinas, Brazil