London is a global centre of strategic thinking, business transformation, and innovation home to some of the world’s most respected consulting firms.
Whether you’re launching a new business initiative, navigating M&A, or embracing digital transformation, these firms provide the sharpest minds and most seasoned experience to help companies grow.
1. McKinsey & Company
Founded: 1926 (Chicago, USA)
London Office Opened: 1959
UK Headquarters: 1 Jermyn Street, London SW1Y 4UH
CEO (Global): Bob Sternfels
UK Managing Partner (2025): Katy George
Why It’s Great:
Known for high-impact strategic advice to FTSE 100 firms and global organizations
Pioneer in digital and sustainability transformation
Clients include leading financial institutions, energy providers, and government bodies
2. Boston Consulting Group (BCG)
Founded: 1963 (Boston, USA)
London Office: 20 Manchester Square, London W1U 3PZ
CEO (Global): Christoph Schweizer
London Office Head: Sarah Wilkinson
Why It’s Great:
World-renowned for innovative thinking such as the BCG Matrix and digital strategy
Strong emphasis on climate impact, DEI, and corporate sustainability
Highly rated for culture, work-life balance, and long-term transformation work
3. Bain & Company
Founded: 1973 (Boston, USA)
London Office: 40 Strand, London WC2N 5RW
CEO: Manny Maceda
UK Managing Partner: James Hadley
Why It’s Great:
Results-driven consulting with measurable business impact
Co-founder of the global PE consulting sector
Deep experience in customer loyalty, Net Promoter Score®, and digital experience
4. Deloitte Consulting (UK)
Founded: 1845 (as Deloitte, UK)
Consulting Arm Formalized: 1990s
London Office: 1 New Street Square, London EC4A 3HQ
UK CEO: Richard Houston
UK Consulting Leader: Anne-Marie Malley
Why It’s Great:
UK’s largest Big 4 consulting firm by revenue
Full-service advisory across strategy, tech, M&A, cyber, and HR
Deep partnerships with AWS, Google Cloud, and SAP
5. PwC Strategy& (formerly Booz & Company)
Founded: 1914 (as Booz & Co.)
Acquired by PwC: 2014
London Office: 1 Embankment Place, London WC2N 6RH
Global Strategy& Leader: Peter Gassmann
UK Consulting Leader (PwC): Carl Sizer
Why It’s Great:
Integrates strategic thinking with PwC’s large-scale implementation power
Known for excellent frameworks and board-level advisory
Strong in defense, public sector, and operational improvement
6. KPMG Advisory Services
Founded: 1987 (Merger of Peat Marwick and KMG)
London Office: 15 Canada Square, London E14 5GL
UK Chairman and CEO: Jon Holt
UK Head of Advisory: Lisa Heneghan
Why It’s Great:
Strong in digital operations, financial transformation, and ESG compliance
Deep experience in regulatory advisory, FS, and restructuring
Fast-growing AI & data analytics consulting team in London
7. EY-Parthenon (Ernst & Young)
Founded: 2014 (via merger with The Parthenon Group)
London Office: 1 More London Place, London SE1 2AF
Global Leader: Mitch Berlin
UK Strategy Head: Julie Teigland
Why It’s Great:
Strategy-focused firm within EY’s global umbrella
Strong in transaction strategy, IPO readiness, and portfolio performance
A go-to for consumer goods, private equity, and turnaround consulting
8. Oliver Wyman
Founded: 1984
London Office: 55 Baker Street, London W1U 8EW
CEO: Nick Studer (UK-based)
London Office Lead: Deborah O’Neill
Why It’s Great:
A leader in risk management, financial services, and pricing strategy
Deep client base in insurance, healthcare, and transportation
Frequently consulted for post-Brexit and fintech strategy
9. Roland Berger
Founded: 1967 (Munich, Germany)
London Office: 10 Fleet Place, London EC4M 7RB
CEO: Stefan Schaible
UK Managing Partner: Charles-Edouard Bouée
Why It’s Great:
Europe’s top strategy consulting firm with global reach
Focus on digital disruption, sustainability, and supply chain reengineering
Strong manufacturing and automotive client portfolio
10. PA Consulting Group
Founded: 1943 (UK)
London Office: 10 Bressenden Place, London SW1E 5DN
CEO: Ken Toombs
UK Innovation Lead: Frazer Bennett
Why It’s Great:
- UK-based with a strong legacy in engineering and innovation
- Designs and delivers advanced R&D, AI, and product development projects
- Key consulting partner to NHS, UK MOD, and global pharma firms
