SThree

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.

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!

The UK features numerous trusted staffing agencies across sectors; leading names include Hays, Reed, Michael Page, Robert Walters, and SThree, offering everything from multi-sector coverage to specialized IT, finance, and engineering recruitment.

1. Hays

Best for: Multi-sector job seekers Sectors: IT, finance, construction, engineering, legal, HR, marketing, property Overview: Hays is the UK’s largest specialist recruitment agency with offices nationwide. Consultants specialize in sectors and salary bands, offering candidates meaningful connections with hiring managers and detailed salary guides. Pros: Wide coverage, sector-specific consultants, extensive resources Cons: Consultant quality varies; some high-volume roles may feel transactional

2. Reed

Best for: Volume recruitment and accessibility Sectors: All sectors Overview: Combines the UK’s largest job board (reed.co.uk) with a network of 100+ recruitment offices, offering both online applications and agency-sourced roles. Ideal for entry-level to mid-level candidates seeking widespread opportunities. Pros: Extensive job listings, free CV tools and career advice, large office network Cons: High application volume per role, agency-side can feel impersonal

3. Michael Page

Best for: Mid-to-senior professional roles Sectors: Finance, legal, marketing, technology, HR, engineering Overview: Focuses on permanent roles for professionals with 3–15 years’ experience. Offers consultative guidance, interview preparation, and salary benchmarking. Pros: Experienced consultants, direct hiring manager relationships, feedback culture Cons: Limited for entry-level roles and fewer temporary positions

4. Robert Walters

Best for: Finance, legal, and professional services Sectors: Finance, legal, HR, technology, marketing Overview: Strong relationships with blue-chip employers; emphasizes thorough candidate screening and skill alignment. Offers professional guidance and salary surveys for benchmarking. Pros: Blue-chip clients, international network, strong candidate prep Cons: London-focused, selective registration, not suitable for all levels

5. Robert Half

Best for: Accounting, finance, and temporary roles Sectors: Accounting, finance, admin, technology Overview: Specializes in temporary financial placements with fast turnaround and competitive pay. Temp roles frequently convert to permanent positions. Pros: Strong UK finance temp market, temp-to-perm conversions, rapid placements Cons: Narrow sector focus and assignments can be short-term

6. SThree (Huxley / Computer Futures)

Best for: IT professionals, contractors, and tech recruitment Sectors: Software, data, cloud, cybersecurity, fintech Overview: Specialist IT recruitment across multiple brands. Deep knowledge of tech roles and IR35 compliance ensures precise matching of talent and contracts. Pros: Expertise in IT, strong contractor market, tech-focused Cons: Limited outside IT, contractor-heavy focus may limit permanent searchers

7. Spencer Ogden

Best for: Energy, renewables, oil, gas, civil engineering Sectors: Energy, infrastructure, renewables, oil/gas, engineering Overview: Focuses on technical and engineering roles with UK net-zero and infrastructure growth in mind. Excellent for project-based and specialized technical placements. Pros: Deep sector knowledge, international exposure, renewable energy opportunities Cons: Narrow focus, project-based variability

8. Randstad

Best for: Healthcare, education, and public sector Sectors: NHS, education, social care, administration Overview: Supplies temporary and permanent staff to hospitals, schools, and public-sector organizations. Offers flexible temp-to-perm models. Pros: Wide UK coverage, weekly pay, NHS framework supplier Cons: Less effective for private-sector roles, temp shifts can be last-minute

These agencies represent a combination of generalist and specialist recruitment expertise, catering to a wide array of professional roles, temporary and permanent placements, and industry-specific needs. When choosing an agency, consider sector specialization, engagement model (temp vs. permanent), and geographic coverage to ensure the best alignment with your career or hiring goals. For IT and tech roles, SThree and Michael Page are highly regarded; for finance or legal, Robert Walters and Robert Half excel; and for broad sector coverage, Hays and Reed provide nationwide reach and resources.