These are large recruitment and staffing agencies in the United Kingdom. Many are headquartered in London, with a few in nearby towns like Addlestone and Hemel Hempstead. The companies listed span diverse specializations, from general recruitment to niche sectors. Hays and Reed are established staffing and recruiting firms, while AMS focuses on global talent solutions. Supporting Education Group specializes in educational staff, and Acacium Group provides healthcare delivery partners.
A clear pattern is the strong concentration of headquarters in London, indicating its role as a central hub for professional services. While many firms are in traditional recruitment, there are also specialized providers like Toptal, which connects talent in business, design, and technology, and Computer Futures, focusing on IT talent.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 55,656 | ||||
| 2 |
Hayshaysplc.com
Specialist recruitment and workforce solutions provider offering advisory services, career transitions, and employer brand positioning, with a focus on empowering people and businesses to succeed globally |
31,854 | |||
| 3 |
Michael Pageredirect.michaelpage.com
Professional services recruitment with specialized teams offering local market knowledge and international network support across multiple industries and regions. |
15,725 | |||
| 4 |
AMSweareams.com
Global talent solutions business specializing in sourcing, selecting, and retaining top talent through digital innovation, HR expertise, and a holistic approach to workforce management |
8,718 | |||
| 5 |
Supporting Education Groupsupportingeducation.com
Providing qualified teachers, support staff, professional development, and tailored services to improve education quality for schools and disadvantaged students. |
8,571 | |||
| 6 |
SThreesthree.com
Connecting skilled STEM professionals with organizations to drive innovation and solve complex challenges through specialist brands and tailored workforce solutions. |
7,927 | |||
| 7 | 7,523 | ||||
| 8 | 6,669 | ||||
| 9 |
Toptaltoptal.com
A network connecting top talent in business, design, and technology to help companies scale teams on demand with impressive growth |
6,417 | |||
| 10 |
Acacium Grouplinktr.ee
Global healthcare delivery partner with 40+ years experience offering workforce access, technology, and expertise to improve healthcare, social care, and life sciences worldwide |
5,961 | |||
| 11 | 5,889 | ||||
| 12 |
NHS Professionalsnhsprofessionals.nhs.uk
Provision of flexible, cost-effective healthcare staff including nurses, doctors, and administrative professionals to support NHS trusts efficiently. |
5,807 | |||
| 13 |
Vialtovialtopartners.com
Global mobility ecosystem transformation through tax, immigration, compensation, and work strategy solutions for multinational organizations in 150+ countries |
5,717 | |||
| 14 |
Teaching Personnelteachingpersonnel.com
Specializes in recruiting teachers and classroom support staff for UK schools, providing staffing, tutoring, and supply services. |
5,388 | |||
| 15 |
Computer Futurescomputerfutures.com
A global STEM recruitment company connecting businesses with highly skilled IT talent for over 30 years through specialized IT market expertise |
5,349 | |||
| 16 |
Agricultural and Farming Jobsagrifj.co.uk
Specialist Agricultural Recruitment Agency offering headhunting and job advertising services for Agricultural, Farming, Horticultural, Veterinary, and related clients worldwide |
5,132 | |||
| 17 |
RSS Globalrssglobal.com
A portfolio of staffing brands specializing in workforce solutions across various sectors in the UK, Ireland, and Asia Pacific |
4,535 | |||
| 18 |
Robert Waltersrobertwalters.co.uk
Providing recruitment, outsourcing, and advisory services globally to connect organizations with skilled professionals for permanent, temporary, or interim roles. |
4,508 | |||
| 19 |
Oil and Gas Job Search Ltdenergyjobsearch.com
Oil and Gas Job Search is a leading job site connecting over 35 million oil and gas professionals with industry opportunities globally |
4,341 | |||
| 20 |
FDM Groupfdmgroup.com
global business and technology consultancy powering tech innovation, launching careers, partnering with companies, emphasizing diversity and inclusivity worldwide |
4,132 | |||
| 21 |
UNKNOWNweareunknown.io
The company fosters diversity and creativity by facilitating connections, welcoming different perspectives to open up new possibilities in creative communities |
4,046 | |||
| 22 |
Page Personnelredirect.pagepersonnel.com
Specialist recruitment services provider with global offices, part of a leading recruitment group since 1994 Trusted by finance, secretarial, logistics sectors for temporary, contract, permanent staff |
3,878 | |||
| 23 |
Blue Arrowbluearrow.co.uk
A leading UK staffing agency with expertise in placing candidates in various sectors, known for excellence in recruitment and employer recognition |
3,506 | |||
| 24 |
NES Fircroftnesfircroft.com
Global engineering staffing provider with expertise in Oil & Gas, Power & Renewables, Infrastructure, Life Sciences, Mining, Automotive, and Chemicals sectors worldwide Tailored staffing solutions |
3,337 | |||
| 25 |
QX Global Groupqxglobalgroup.com
Partnering with mid-market organizations to reduce operating costs, improve efficiency, and scale confidently through sector expertise, process optimization, and technology. |
3,089 | |||
| 26 |
IRIS Software Groupiris.co.uk
Leading provider of integrated software solutions and services to help organizations make better business decisions, minimize admin, and improve efficiency across various industries. |
3,041 | |||
| 27 |
Peninsula UKpeninsulagrouplimited.com
Provides employment law, HR, and health & safety services, including training, tax, payroll, software, and employee assistance programs to businesses. |
2,888 | |||
| 28 |
Londonagency.org.uk
Innovative recruitment agency based in London helps individuals find and apply for the latest job opportunities to start new careers |
2,884 | |||
| 29 |
NGA Human Resources, an Alight companyalight.com
Global provider of HR solutions, pioneering digital HR, payroll, compliance, and workforce data to enhance employee experiences, save costs, and transform organizations worldwide |
2,789 | |||
| 30 |
Ingeusingeus.co.uk
This organization provides services to improve skills, employment, wellbeing, and social inclusion, including employment programs, youth services, training support, and probation services |
2,546 | |||
| 31 |
The Black Apprentice Network (BAN)blackapprenticenetwork.co.uk
A network for black apprentices of African and Caribbean descent to connect, learn, and grow together, striving for continuous improvement |
2,529 | |||
| 32 | 2,522 | ||||
| 33 |
Pertemps Network Grouplinktr.ee
This company has been connecting individuals with the right jobs since 1961, specializing in permanent, temporary, and contract positions across various industries |
2,411 | |||
| 34 |
Staffline Recruitment Limitedstaffline.co.uk
A leading UK recruiter and workforce provider offering OnSite solutions to various sectors, focusing on large-scale recruitment and innovative technologies |
2,409 | |||
| 35 |
The Best Connectionthebestconnection.co.uk
A leading UK provider of flexible workforce solutions to industrial, driving, warehouse, distribution, and retail sectors with strong client and candidate services |
2,329 | |||
| 36 |
Search Recruitment Groupsearchrecruitmentgroup.com
Global leader in recruitment solutions with decades of experience, offering strategic expertise, honesty, and integrity Committed to empowering clients and candidates for success |
2,310 | |||
| 37 |
Hinduja Global Solutions Ltdhgs.com
An IT and services company located in the UK, providing solutions for various industries with a focus on information technology |
2,296 | |||
| 38 |
Huntswoodhuntswood.com
A trusted partner offering resourcing, outsourcing, and advisory services to help clients succeed and create better outcomes |
2,287 | |||
| 39 |
Antal Internationalantal.com
Global executive search firm with extensive network, industry expertise, and local consultants providing talent solutions across multiple sectors worldwide. |
2,242 | |||
| 40 |
Aptia Groupaptia-group.com
Professional services firm combining technology and expertise to simplify pensions, health, and insurance management for businesses and individuals globally. |
2,209 | |||
| 41 |
Tenth Revolution Grouptenthrevolution.com
Global leader bridging the tech skills gap by finding, training, and deploying talent through unified tech talent solutions for digital transformation success |
2,179 | |||
| 42 |
Zen Educatezeneducate.com
This company is revolutionizing education recruitment by saving schools money on agency fees, providing skilled staff, and offering a user-friendly online platform |
2,147 | |||
| 43 |
Searchsearch.co.uk
A leading UK recruitment agency with 35+ years experience, offering expertise in over 15 specialisms and serving clients nationwide Trusted, successful matchmakers |
2,135 | |||
| 44 |
Shaw Trustshawtrust.org.uk
A social purpose organization focused on challenging inequality, providing employment opportunities, and supporting social mobility through various services and support |
2,124 | |||
| 45 |
Bright Networkemployers.brightnetwork.co.uk
Connects top companies with bright graduates using data and technology to offer career opportunities and fulfill business talent needs. |
2,100 | |||
| 46 | 2,095 | ||||
| 47 |
Young Professionalsyoung-professionals.uk
This company connects schools and colleges with companies to help place school leavers into apprenticeships and work experience programs with top brands |
2,029 | |||
| 48 |
GCSgcstechtalent.com
Global recruitment agency specializing in technology and commercial sectors, connecting innovators with businesses worldwide for over 30 years Part of nGAGE Specialist Recruitment since 2017 |
1,939 | |||
| 49 |
Protocol Educationprotocol-education.com
Specialist recruitment provider for the education sector, offering placement services for teachers, assistants, nursery nurses, instructors, and tutors across England |
1,819 | |||
| 50 |
TeacherActiveteacheractive.com
A leading education recruitment specialist committed to delivering excellent services to schools and supply staff with a focus on positive leadership and support during COVID-19 |
1,815 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 51 |
Newcross Healthcare Solutionsnewcrosshealthcare.com
Providing flexible healthcare staffing solutions combining technology and human touch to deliver personalized care and operational workforce insights. |
1,786 | |||
| 52 |
Avance Consultingavanceservices.com
Global talent solutions provider across various industries, offering innovative services with a focus on domain expertise, network connections, and market trends for clients and candidates |
1,734 | |||
| 53 |
Cooper Parrylinktr.ee
This B Corp provides audit, tax, innovation, tech, outsourcing, deals, wealth, sustainability, legal, and digital services to entrepreneurial businesses. |
1,698 | |||
| 54 |
Tradewind Recruitmenttwrecruitment.start.page
A leading teaching agency in the UK, matching teachers and support staff with schools for various roles since 2001 Providing exceptional service and CPD courses |
1,685 | |||
| 55 |
Progressiveprogressiverecruitment.com
International recruitment consultancy specializing in permanent and contract placements in IT, Pharmaceuticals, Healthcare, Telecommunications, Construction, and Engineering industries across 8 global locations |
1,667 | |||
| 56 |
AABaabgroup.com
A tech-enabled group providing business critical services including audit, accounting, tax, HR, payroll, financial planning, wealth management, and organizational consulting |
1,663 | |||
| 57 |
ctrgctrg.co.uk
Challenge trg Group provides multi-service logistics solutions, including temporary staffing, haulage, traction, bespoke training, and crisis management teams for the logistics and warehouse sector |
1,547 | |||
| 58 |
Constellationconstellation.co.uk
Flexible staffing program providing chefs, managers, porters, cleaners, and retail staff for sports, healthcare, and various UK and Ireland venues. |
1,541 | |||
| 59 |
Zelliszellis.com
A leading provider of payroll, HR, and managed services in the UK and Ireland for large companies, serving millions of employees annually |
1,534 | |||
| 60 |
Office Angelsoffice-angels.com
A dedicated recruitment agency helping jobseekers and employers find success through long-term relationships, with knowledgeable and approachable consultants |
1,501 | |||
| 61 |
Morson Talentmorson-edge.com
A leading recruitment firm with 50 years of experience, offering innovative solutions and a personal approach across various sectors globally |
1,478 | |||
| 62 |
CloudPaycloudpay.com
CloudPay provides global companies with modern solutions for employee pay processes, including payroll, payments, and on-demand pay, guided by trusted experts |
1,460 | |||
| 63 |
Macdonald & Companymacdonaldandcompany.com
A leading global recruitment consultancy specializing in real estate and built environment sectors, connecting professionals with organizations across various real estate services |
1,451 | |||
| 64 |
Reed in Partnershipreedinpartnership.co.uk
A company dedicated to transforming lives by helping individuals find work, improve health, develop skills, and achieve their potential |
1,436 | |||
| 65 |
Brook Streetbrookstreet.co.uk
Established in 1946, this UK recruitment agency specializes in finding office staff and industrial workers on a temporary or permanent basis |
1,422 | |||
| 66 |
Vision for Educationvisionforeducation.co.uk
This company is dedicated to recruiting teachers and support staff for schools while maintaining transparency and honesty in their recruitment process |
1,419 | |||
| 67 |
Paragon UKparagon.world
Providing data-driven, multichannel marketing, transactional communications, and automated workflows to digitize and enhance customer communication journeys securely and compliantly. |
1,411 | |||
| 68 |
K2 Partnering Solutionsk2partnering.com
Providing consulting, recruitment, training, and platform solutions to support companies in enterprise applications, AI, and cloud technology projects. |
1,383 | |||
| 69 |
Academics Ltdacademicsltd.co.uk
A leading teacher recruitment consultancy with expertise in placing educators internationally, specializing in long-term contracts, supply placements, and professional development |
1,330 | |||
| 70 |
MLmarkloucas.co.uk
An established company in the payments and banking industry consulting and deploying professional consultants globally for trusted expertise |
1,320 | |||
| 71 |
private nanny agencymerinannies.com
A private childcare agency in the Alps offering qualified nannies in various locations, providing exceptional service, including travelling, live-in, and local nannies |
1,310 | |||
| 72 |
Phaidon Internationalphaidoninternational.com
A global professional services organization specializing in talent acquisition for Fortune 500 companies and startups across various industries worldwide |
1,302 | |||
| 73 |
PeoplePlus UKpeopleplus.co.uk
A leading UK employability and skills provider offering programs to help people secure and retain jobs, develop careers, and support prison education |
1,297 | |||
| 74 |
PMP Recruitmentpmprecruitment.co.uk
A leading provider of branch and onsite managed service solutions, specializing in recruiting, training, and managing warehouse, industrial, and driving colleagues |
1,294 | |||
| 75 |
NGO Recruit Partnersngorecruit.com
NGO Recruit is a talent acquisition agency specializing in sourcing passionate leaders for non-profits in Africa and Europe, promoting diversity and gender equity |
1,286 | |||
| 76 |
Odgers Berndtsonodgersberndtson.com
Global executive search, interim management, talent assessment, and leadership development firm serving diverse sectors with innovative, collaborative, and client-focused solutions. |
1,265 | |||
| 77 |
Commercial Services Groupcommercialservicesgroup.com
Global supplier of products and services to education and public sectors, operating 23 trading businesses worldwide, with a wide range of specialty services |
1,207 | |||
| 78 |
Randstad UKrandstad.co.uk
Connecting specialized talent with businesses, supporting skills development, and providing diverse, future-ready professionals for long-term workforce agility. |
1,193 | |||
| 79 |
hap Solutions Grouphapgroup.co.uk
Specializing in temporary staffing, permanent recruitment, and training services, we elevate businesses throughout the UK & Ireland with tailored solutions |
1,130 | |||
| 80 |
Prospero Teachingprosperoteaching.com
Award-winning UK education recruitment agency offering teaching jobs with great pay, flexible options, CPD support, and dedicated consultants for schools and colleges |
1,128 | |||
| 81 |
New Directionsnew-directions.co.uk
Established in 1994, the award-winning group of companies specialize in Education, Social Care, Professional and Pharmacy services, earning trust through responsiveness and reliability |
1,119 | |||
| 82 |
Nurseplus UK Ltdnurseplusuk.com
A healthcare employment agency providing quality care services through experienced staff for hospitals, care homes, mental health units, schools, and communities across England |
1,114 | |||
| 83 |
Arc Hospitality Recruitmentwearearc.co.uk
A leading event staffing agency in the UK, providing high-calibre staff for legendary venues and world-class events, enhancing guest experience to exceptional heights |
1,112 | |||
| 84 |
Trinnovo Group | B Corpβ’trinnovogroup.com
Community-led recruitment and advisory business focused on high-growth tech-enabled sectors, promoting diversity, inclusion, workplace innovation, and social outreach programs |
1,073 | |||
| 85 |
Omegaomegaresource.co.uk
Established in 1998, this ISO-certified recruitment company specializes in contract, temporary, and permanent placements in technical, engineering, and industrial sectors globally |
1,068 | |||
| 86 |
ECOMmorson-edge.com
Established in a garage in 1999, ECOM is a recruitment agency specializing in Technology, Product, UX & Design, and Data & Analytics positions across various sectors |
1,062 | |||
| 87 |
Off to Workofftowork.co.uk
A leading UK event staffing company offering casual staffing, permanent recruitment, training, and consultancy services for events and hospitality industry professionals |
1,055 | |||
| 88 |
Medacs Healthcaremedacs.com
Global healthcare staffing provider offering temporary and permanent recruitment for doctors, nurses, carers, and allied health professionals, along with workforce solutions worldwide |
1,051 | |||
| 89 |
MiddletonMurraylimitlesslifestrategies.com
A recruitment and training company with 18 years of success, offering programs to help people from all backgrounds succeed in their careers |
1,036 | |||
| 90 |
Seetecseetec.co.uk
A leading employee-owned service provider in the UK and Ireland, offering assistance in skills, employment, justice, and health sectors to improve lives and create opportunities |
1,024 | |||
| 91 |
Selby Jenningsselbyjennings.com
This company provides talent solutions for a range of financial services industries, from investment banking to fintech start-ups Contact them for hiring or career opportunities |
1,022 | |||
| 92 |
Driver Hire Nationwidedriverhire.co.uk
A leading provider of transport and logistics staff, offering recruitment, training, Driver CPC, franchise opportunities, and licence checking services in the UK |
1,016 | |||
| 93 |
All Cruise Jobsallcruisejobs.com
Leading job board for cruise line industry vacancies, offering opportunities to work on cruise ships through wwwallcruisejobscom |
1,009 | |||
| 94 |
ID Medicalid-medical.com
Connecting healthcare professionals with roles across the UK and providing organisations with workforce solutions to improve patient care. |
998 | |||
| 95 |
Harvey Nashharveynash.com
Specializes in recruiting, sourcing, and managing skilled technology talent globally, offering executive search, contractor recruitment, and workforce solutions. |
985 | |||
| 96 |
STS Aviation Servicesstsaviationgroup.com
A global provider of aircraft maintenance, engineering, and modification solutions with state-of-the-art hangars, modification facilities, and numerous line maintenance stations worldwide |
980 | |||
| 97 |
Host Staffinghost-staffing.co.uk
Specialized hospitality recruitment agency leveraging talent, technology, and relationships to deliver remarkable results for top-tier clients and professionals in the industry |
979 | |||
| 98 |
Indeed Flexindeedflex.com
Revolutionary app connecting job seekers with temporary work, offering flexibility in where, when, and how they work while supporting employers with high-quality workers |
978 | |||
| 99 |
The MCG Groupthemcggroup.com
A people-focused group of companies specializing in aerospace, construction, education, healthcare, and technology, emphasizing working with the best people |
950 | |||
| 100 |
Oxfordagency.org.uk
Innovative recruitment agency in Oxford helps individuals find and apply for the latest job opportunities to kickstart new careers |
938 | |||
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
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