Top 10 RPO providers in the UK (August 2026)
What is Recruitment Process Outsourcing?
Recruitment Process Outsourcing (or RPO for short) is a long-term strategic business partnership where a company decides to delegate all (full RPO) or part (partial RPO) of its recruitment functions to an external service provider that manages the hiring process on its behalf.
RPO providers handle tasks such as sourcing candidates, screening applications, conducting interviews, pre-employment checks onboarding, compliance and managing recruitment technology. They act as an extension of the company's HR team, aiming to improve recruitment efficiency, reduce hiring costs, and enhance talent quality.
Who are the leading RPO providers in the UK?
Full disclosure: this list is published by Vermelo, an RPO provider in the UK on it, so we haven't ranked it. Providers are organised by what each is genuinely best for, based on their own publicly stated positioning and independent recognition.
For the fuller assessment of each, including when to choose someone other than us, read our complete UK RPO market review.
1. AMS — Best for global enterprise programmes. UK-headquartered and one of the most established names in RPO worldwide, known for complex multi-country hiring and a blue-chip client list.
2. Cielo — Best for pure-play enterprise RPO. The best-known firm whose entire business is recruitment outsourcing, consistently top-ranked in buyer-satisfaction surveys, with heavy investment in recruitment technology.
3. Vermelo — Best for regulated UK businesses. Named Best Recruitment Process Outsourcing (RPO) Business at the Global Recruiter Awards 2025. Full, partial, project and hybrid RPO with FCA screening and IR35 governance built in and a track record concentrated in insurance, insurtech and financial services.
4. Hays Talent Solutions — Best for UK regional reach. The outsourcing arm of one of Britain's most recognisable recruitment brands, with unmatched physical coverage across the UK regions.
5. Resource Solutions — Best for banking and professional services. Part of the Robert Walters Group, with decades of City hiring pedigree and full, project and modular models.
6. Hudson RPO — Best for flexible mid-market programmes. An established global provider consistently ranked in buyer-satisfaction lists, positioned between enterprise scale and mid-market adaptability.
7. PeopleScout — Best for technology-led volume hiring. A global provider known for high-volume recruitment and its Affinix technology platform, with UK operations and strength in compliance-heavy volume campaigns.
8. Korn Ferry — Best for RPO blended with executive search. Brings elite assessment and leadership consulting pedigree to recruitment outsourcing.
9. Randstad Sourceright — Best for blended RPO and MSP at scale. The talent solutions arm of the world's largest staffing group, with substantial UK operations.
10. WilsonHCG — Best for partnership-led enterprise RPO. A global provider with a strong culture and candidate-experience reputation and a substantial UK practice.
How to choose the right RPO for you
RPO providers aren’t one-size-fits-all, which provider is best for your business will vary greatly depending on hiring volume, geography and sector depth. If you're hiring across many countries, you will liley benefits better from one of the bigger brands in this list. If you're a UK business or SME, particularly a regulated one, hiring at a volume that matters to you but wouldn't register at enterprise scale, the question is which provider treats your programme as a headline rather than a line item.
Our full market review covers when each provider fits, or book a discovery call and we'll tell you straight, including when the answer is a name above ours.
Published by Vermelo, winner of Best RPO Business at the Global Recruiter Awards 2025. Reviewed annually; provider descriptions drawn from each firm's own public positioning.
Author Anthony Butler | 26th August 2026