Top 10 HR Companies In The UK
SUMMARY
The UK has a large HR industry offering services from recruitment and payroll to employee management, HR consulting, workplace strategy and employment-law support. The term ‘HR company’ can include different types of business, but this list focuses mainly on established HR consultancies and workforce-service providers across the country.
Recent 2026 industry research reveals companies such as Mercer, Deloitte, PwC, Korn Ferry, WTW and KPMG among the leading HR consulting companies in the UK.
1. Mercer
| Particulars | Details |
|---|---|
| Company Name | Mercer |
| Year Founded | 1945 |
| Headquarters | London, UK |
| UK Head Office | 1 Tower Place West, Tower Place, London EC3R 5BU, UK |
| Business Category | HR, workforce and investment consulting |
| Main Services | Employee benefits, retirement and pensions, investments, workforce strategy, talent and rewards, health and wellbeing |
| Primary Focus | Helping organizations build healthier, wealthier and more productive workforces |
| Key Executive | Phil Parkinson – CEO, Mercer UK |
| Ownership / Listing | Part of Marsh McLennan (NYSE: MMC) |
| Funding / Valuation | Not separately disclosed |
Mercer is a major HR and workforce consultancy in the UK. Its services cover employee benefits, retirement, compensation, talent management and workforce strategy.
The company works with organisations on both everyday HR matters and larger workforce decisions. Its work can involve helping businesses understand employee needs, designing benefits programmes and developing long-term people strategies.
Mercer is part of Marsh McLennan and operates internationally.
2. Deloitte
| Category | Company Information |
|---|---|
| Organization | Deloitte |
| Established | 1845 |
| Main Location | London, UK |
| UK Office | 1 New Street Square, London EC4A 3HQ, UK |
| Industry | Professional services |
| Core Services | Audit, consulting, tax, risk advisory and financial advisory |
| Workforce Solutions | Human capital consulting, workforce transformation, talent management, organizational design and leadership development |
| Business Objective | Improving workforce performance and organizational change management |
| UK Leadership | Richard Houston – CEO, Deloitte UK |
| Ownership | Private network of independent member firms |
| Valuation | Not publicly disclosed |
Deloitte is one of the world’s largest professional-services firms and has a substantial Human Capital practice in the UK.
Its HR-related work includes workforce transformation, organisational design, talent management, leadership and employee experience.
Deloitte generally works with larger organisations dealing with complex workforce or organisational changes. Its HR consulting practice is also included in the top tier of Consultancy UK’s 2026 Human Resources ranking.
3. PwC
| Company Attribute | Details |
|---|---|
| Company Name | PwC |
| Founded | 1998 (UK firm) |
| Headquarters | London, UK |
| UK Office | 1 Embankment Place, London WC2N 6RH, UK |
| Business Type | Professional services |
| Consulting Areas | Audit, assurance, tax, consulting and deals |
| People Services | HR transformation, workforce consulting, employee experience and leadership development |
| Main Objective | Creating long-term value through people, technology and transformation |
| Key Executive | Mohammed Kande – Senior Partner, PwC UK |
| Ownership Structure | Private network of independent member firms |
| Funding / Valuation | Not publicly disclosed |
PwC provides HR and workforce consulting through its people and workforce services.
Its work includes areas such as workforce strategy, organisational transformation, employee experience, leadership and HR technology.
PwC can be particularly relevant for companies undergoing major organisational changes, mergers, digital transformation or workforce restructuring.
4. Korn Ferry
| Profile Field | Information |
|---|---|
| Company Name | Korn Ferry |
| Established | 1969 |
| Global Headquarters | Los Angeles, California, USA |
| UK Office | The Scalpel, 52 Lime Street, London EC3M 7AF, UK |
| Industry | Organizational consulting and executive search |
| Executive Services | Executive search and leadership development |
| Consulting Services | Organizational strategy, workforce advisory, assessment and succession planning |
| Core Focus | Strengthening leadership, talent and organizational structures |
| Key Executive | Gary D. Burnison – CEO, Korn Ferry |
| Stock Exchange | New York Stock Exchange (NYSE: KFY) |
| Market Capitalization | Approximately USD 3–4 billion (2024 estimate in the supplied material) |
Korn Ferry is a global organisational consulting and executive-search company with a strong HR focus.
Its services include leadership development, talent management, executive recruitment, organisational strategy and employee assessment.
The company is particularly known for its work with leadership and senior talent. Korn Ferry is also listed among the Diamond-level HR consulting firms in Consultancy UK’s 2026 HR consulting ranking.
5. WTW
| Company Detail | Information |
|---|---|
| Full Name | WTW (Willis Towers Watson) |
| Founded | 1828; rebranded as WTW in 2021 |
| Headquarters | London, UK |
| UK Office | 51 Lime Street, London EC3M 7DQ, UK |
| Business Area | Advisory, broking and solutions in people, risk and capital |
| Employee Solutions | Benefits, retirement, pensions and talent and rewards |
| Risk Services | Health and wellbeing, risk and insurance, capital and investment solutions |
| Main Focus | Helping organizations attract, retain and motivate employees while managing risk |
| Key Executive | Carl Hess – CEO, WTW |
| Stock Exchange | Nasdaq (NASDAQ: WTW) |
| Market Capitalization | Approximately USD 28–30 billion (2024 estimate in the supplied material) |
WTW, formerly known as Willis Towers Watson, provides consulting and advisory services covering people, risk and capital.
Its HR-related services include employee benefits, rewards, retirement, talent and organisational advice.
For larger employers, WTW can provide support across several areas of workforce management rather than focusing solely on recruitment or basic HR administration.
6. KPMG
| Particulars | Company Details |
|---|---|
| Company Name | KPMG |
| Established | 1987 |
| Global Headquarters | Amstelveen, Netherlands |
| UK Office | 15 Canada Square, London E14 5GL, UK |
| Business Category | Professional services |
| Main Services | Audit, tax advisory, consulting and financial advisory |
| People Services | HR, workforce transformation, organizational change and talent advisory |
| Business Focus | Improving performance, trust, workforce effectiveness and sustainable growth |
| Key Executive | Jon Holt – Chair and Senior Partner, KPMG UK |
| Ownership | Private network of independent member firms |
| Valuation | Not publicly disclosed |
KPMG is another major professional-services company with a Human Resources and People & Change practice.
Its services can include workforce transformation, organisational change, HR strategy and people management.
KPMG works with organisations across different industries and often becomes involved when companies are changing their operating models or workforce structures. It is included among the Diamond-level firms in Consultancy UK’s 2026 HR consulting ranking.
7. EY
| Company Attribute | Details |
|---|---|
| Organization | EY (Ernst & Young) |
| Founded | 1989 |
| Headquarters | London, UK |
| UK Head Office | 1 More London Place, London SE1 2AF, UK |
| Industry | Professional services |
| Main Services | Assurance, tax, consulting and strategy |
| Workforce Services | People advisory, risk advisory, leadership and technology transformation |
| Core Objective | Creating long-term value through people, technology and innovation |
| Key Executive | Anna Anthony – UK Chair and Managing Partner, EY |
| Ownership | Private network of independent member firms |
| Funding / Valuation | Not publicly disclosed |
EY provides People Advisory Services to businesses in the UK and internationally.
Its HR work covers areas such as workforce transformation, organisational change, talent, reward and HR technology.
EY’s services are often targeted at businesses that need to align their people strategy with wider organisational or technological changes. It is listed among the Platinum-level HR consulting firms in Consultancy UK’s 2026 ranking.
8. Aon
| Profile Category | Details |
|---|---|
| Company Name | Aon |
| Founded | 1982 |
| Global Headquarters | Chicago, Illinois, USA |
| UK Office | The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London EC3V 4AB, UK |
| Business Type | Professional services |
| Core Areas | Risk, reinsurance, human capital and health solutions |
| Main Services | Risk advisory, insurance broking, reinsurance, human capital and talent solutions |
| Primary Focus | Helping businesses make decisions about risk, people and data |
| Key Executive | Greg Case – CEO, Aon |
| Stock Exchange | New York Stock Exchange (NYSE: AON) |
| Market Capitalization | Approximately USD 70–75 billion (2024 estimate in the supplied material) |
Aon is a global professional-services company with significant expertise in employee benefits and workforce-related consulting.
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Its services include employee benefits, retirement, health and wellbeing, compensation and workforce risk.
Aon is particularly relevant to companies examining the financial and benefits side of HR. It also appears in current UK HR and organisation consulting datasets.
9. McKinsey & Company
| Company Information | Details |
|---|---|
| Company Name | McKinsey & Company |
| Founded | 1926 |
| Headquarters | New York, New York, USA |
| UK Office | 1 Angel Court, London EC2R 7HJ, UK |
| Industry | Management consulting |
| Core Services | Strategy, operations, organization, technology and transformation consulting |
| Workforce Focus | People strategy, organizational effectiveness and transformation |
| Main Objective | Helping organizations solve complex problems and pursue sustainable growth |
| Key Executive | Bob Sternfels – Global Managing Partner |
| Ownership | Privately held |
| Funding / Valuation | Not publicly disclosed |
McKinsey is primarily known as a management consultancy, but its People & Organisation practice works on several HR-related areas.
These include organisational design, leadership, workforce transformation, talent and people strategy.
Its work is generally focused on larger organisational questions rather than routine HR administration. In the 2026 UK HR consulting ranking, McKinsey is listed among the firms assessed in the sector.
10. Accenture
| Company Attribute | Details |
|---|---|
| Company Name | Accenture |
| Founded | 1989 |
| Global Headquarters | Dublin, Ireland |
| UK Office | 1 Kingdom Street, Paddington, London W2 6BD, UK |
| Industry | Consulting, technology and outsourcing |
| Main Services | Strategy, consulting, technology services, digital transformation, operations and managed services |
| Workforce Solutions | Talent transformation, organizational change and technology-enabled HR |
| Core Focus | Helping organizations improve competitiveness through technology, innovation and human ingenuity |
| Key Executive | Julie Sweet – Chair and CEO, Accenture |
| Stock Exchange | New York Stock Exchange (NYSE: ACN) |
| Market Capitalization | Approximately USD 200–220 billion (2024 estimate in the supplied material) |
Accenture provides consulting and technology services, including work related to talent and organisation.
Its HR-related services can include workforce transformation, HR technology, employee experience and organisational change.
The company’s combination of consulting and technology makes it relevant to organisations looking to modernise their HR systems and processes. Current UK HR and organisation data also tracks Accenture’s Talent & Organization practice among major firms in the sector.
• What Do HR Companies Do?
HR companies can provide much more than recruitment. Depending on the provider, their services may include:
❖ Recruitment and talent acquisition
❖ Payroll and HR administration
❖ Employee benefits
❖ Training and development
❖ Performance management
❖ HR technology
❖ Employment-law support
❖ Workforce planning
❖ Leadership development
❖ Organisational restructuring
❖ Employee engagement
Smaller businesses may turn to external HR companies because they do not have a large internal HR department. Larger organisations may bring in HR consultants when they need specialist expertise for a particular project.
• How to Choose an HR Company
Businesses should consider their actual requirements before selecting an HR provider. A company looking for payroll support will have different needs from an organisation planning a complete workforce transformation.
Important factors include:
❖ Services offered
❖ Industry experience
❖ Company size
❖ UK employment-law knowledge
❖ Technology capabilities
❖ Pricing
❖ Client support
❖ Experience with similar businesses
• Conclusion
The UK HR industry includes a mixture of global consulting firms, specialist workforce advisers and HR service providers. Mercer, Deloitte, PwC, Korn Ferry, WTW, KPMG, EY, Aon, McKinsey and Accenture are among the prominent names operating in the UK HR consulting market.
However, HR requirements vary considerably between businesses. Some companies need help with employee benefits or payroll, while others may need support with leadership, recruitment, organisational change or HR technology. Understanding the specific requirement is therefore important before choosing an HR provider.
• Frequently Asked Questions
1. What is an HR company?
An HR company provides services that help businesses manage their employees and workforce.
2. What services do HR companies provide?
Services can include recruitment, payroll, employee benefits, training, HR consulting, workforce planning and employee management.
3. Is Mercer an HR company?
Yes. Mercer provides HR, employee benefits, retirement, talent and workforce consulting services.
4. Does Deloitte provide HR consulting?
Yes. Deloitte has a Human Capital practice covering areas such as workforce transformation and organisational change.
5. Is Korn Ferry an HR company?
Korn Ferry provides organisational and HR-related consulting, alongside executive search and leadership services.
6. Do small businesses use HR companies?
Yes. Small businesses often outsource HR tasks when they do not have a large internal HR team.
7. What is HR consulting?
HR consulting involves providing professional advice and support on workforce and employee-related matters.
8. Which HR companies work with large businesses?
Large consulting firms such as Deloitte, PwC, Mercer, KPMG, EY and Accenture work with organisations of various sizes, including large enterprises.
9. Can HR companies help with employee benefits?
Yes. Employee benefits and rewards are important services offered by companies such as Mercer, WTW and Aon.
10. How do I choose an HR company in the UK?
Consider the company’s services, industry experience, UK expertise, technology, pricing and experience with businesses similar to yours.
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