Pertemps

Best staffing / recruitment agencies in the UK — practical shortlist

There isn’t one single “best” UK staffing agency: the market is very fragmented. The latest Staffing Industry Analysts reporting says the UK’s largest 125 staffing firms generated £25bn in 2024 revenue, but still represented only 63% of the market; Impellam, Hays and Morson were named among the three largest by revenue. (linkedin.com)

My top UK picks

Also worth knowing

• Impellam Group is a major UK staffing group, but you’ll often encounter its specialist brands rather than “Impellam” itself — for example Guidant Global, Comensura, Lorien for tech/digital, SRG for life sciences/clinical/engineering, and Carbon60 for engineering/technical recruitment. (impellam.com)
• Morgan McKinley is worth adding for finance, banking, technology, projects/change, procurement and professional services roles, especially if you’re targeting London or corporate functions. (morganmckinley.com)
• SThree is a strong specialist if you’re in STEM — technology, life sciences, engineering, energy or financial services technology — rather than general office/admin recruitment. (sthree.com)

Quick recommendation by use case

• If you want office/admin temp work: Reed, Adecco, Randstad, Manpower, Pertemps.
• If you’re in finance/accounting: Hays, Michael Page, Robert Half, Robert Walters, Morgan McKinley.
• If you’re in tech: Hays, Lorien, Robert Half, Michael Page, SThree, Morgan McKinley.
• If you’re in engineering/energy/rail: Morson, Carbon60, Randstad, Hays, SThree.
• If you’re looking for entry-level work: Reed, Adecco, Manpower, Pertemps, Randstad — but apply directly to roles as well.
• If you’re senior/management level: Michael Page, Robert Walters, Hays Executive, Morgan McKinley, Page Executive.

Important UK warning

If you’re a jobseeker, a recruitment agency generally should not charge you to find or try to find you work; GOV.UK says recruitment agencies cannot charge a fee for finding work, with limited exceptions such as some entertainment/modelling cases. (gov.uk)

My practical advice: register with 3–5 agencies that match your sector, not 20 random ones. For most UK jobseekers, a sensible starting set is Hays + Reed + Michael Page/Robert Half + Adecco/Randstad, then add a niche specialist such as Morson, Lorien, SRG, Morgan McKinley or Robert Walters depending on your field.

If you want the best-known staffing agencies in the UK that people actually use, the strongest mainstream brands are Hays, Reed, Adecco, Randstad, Manpower, Robert Walters, Robert Half, Michael Page, Blue Arrow, and Pertemps.

For a practical shortlist, these are the names most often cited as top choices in UK recruitment and staffing:

• Hays — broad coverage across professional, technical, and specialist hiring; repeatedly ranked among the strongest UK brands.
• Reed — one of the best-known UK recruitment brands, with wide national reach and a strong mix of temporary and permanent roles.
• Adecco — strong for high-volume staffing, temporary work, and large employer support.
• Randstad — widely used for flexible staffing and workforce solutions, especially at scale.
• Manpower — established national staffing brand, especially for operational and temporary hiring.
• Michael Page / PageGroup — strong for professional, permanent, and mid-to-senior roles.
• Robert Walters — well regarded for professional and specialist recruitment.
• Robert Half — particularly strong in finance, technology, and professional functions.
• Blue Arrow — widely used for temporary, industrial, and hospitality staffing.
• Pertemps — long-standing UK agency with broad regional presence and operational staffing strength.

If you want the best fit by use case, the most common picks are:

Clutch, GoodFirms, and other directories also list UK staffing firms, but the brands above are the ones most consistently appearing in UK-focused roundups and mainstream employer/jobseeker use cases.

If you want, I can also give you a top 5 by category for:

• temp staff
• permanent professional jobs
• executive search
• healthcare
• warehouse / industrial

Hays, Reed, Adecco, Randstad, Michael Page, Robert Walters, and Robert Half are among the most frequently recommended and widely used recruitment/staffing agencies in the UK, based on revenue rankings, sector expertise, candidate/employer feedback, and popularity in recent 2025–2026 reviews.

These stand out for their scale, national reach (often with branches or strong online presence across the UK), and strong performance in both temporary and permanent placements. Larger firms like these dominate due to their volume of placements and visibility on job boards, while specialists excel in niche areas. Impellam Group leads in overall UK staffing revenue (around £1.48 billion in 2024 data), followed closely by Hays.

Top Recommendations by Category (Popular with Job Seekers and Employers)

Here’s a breakdown of highly regarded options, drawn from sector-focused lists and market data:

• Hays — Often cited as the best overall for multi-sector coverage (IT, finance, construction, legal, HR, engineering). Strong for both temporary and permanent roles with a huge national footprint and good reputation for professional placements.
• Reed — Excellent for volume and accessibility; great for a wide range of sectors and roles (temp and perm). Highly popular with candidates due to its user-friendly platform and widespread offices; strong Trustpilot feedback for communication.
• Adecco — A go-to for temporary, industrial, logistics, admin, and manufacturing roles. One of the largest players with extensive UK coverage and branches for same-day or high-volume temp staffing.
• Randstad — Particularly strong in healthcare, education, public sector, and general staffing. Reliable for both temp and perm across many industries.
• Michael Page (part of PageGroup) — Favoured for mid-to-senior professional roles in finance, legal, marketing, and tech. More perm-focused with a solid reputation for quality placements.
• Robert Walters — Strong in finance, professional services, legal, HR, and tech. Good for both temp and permanent professional roles.
• Robert Half — Specialist in accounting, finance, admin, and temp roles. Popular for finance-related temporary and contract work.

Sector Specialists Worth Considering

• IT/Tech: SThree (brands like Huxley or Computer Futures) or La Fosse Associates (senior digital leadership).
• Energy/Infrastructure/Engineering: Spencer Ogden or Morson Group (high revenue player).
• Finance/Fintech (London-focused): Goodman Masson.
• Education/Teaching: Randstad or specialist options like Tes Recruitment.
• Business Support/Temps (e.g., admin, PA/EA): Reed, Adecco, Office Angels, or specialists like Oriel Partners or Pertemps.

Additional Context

The UK staffing market is fragmented, with the top firms holding a relatively small combined share despite generating billions in revenue. Many people also use general job sites (e.g., Reed.co.uk, Indeed) alongside agencies. Reviews on platforms like Trustpilot highlight strong experiences with Reed, Hays, and others for candidate support, though results vary by branch or consultant—always check recent local feedback.

For the best results, register with 2–3 agencies that match your sector and role type (temp vs. permanent), and tailor your CV to their focus. Larger, well-known brands like those above are what most candidates and employers actually engage with due to their scale and track record. If you have a specific sector, location (e.g., London vs. regional), or role type in mind, I can refine these suggestions further!