Top Outsourcing & Shared Services consulting firms in the UK 2025

What are the leading consulting firms in the UK for Outsourcing & Shared Services services? The top Outsourcing & Shared Services consulting firms in the UK ranking presents the region’s most trusted, expert and influential consultancy firms in the domain for the year 2025.

The capabilities of consulting firms is based on the views of executives and consultants active in Outsourcing & Shared Services, as well as on assessments of Outsourcing & Shared Services capabilities, company reputation, analyst benchmarks, industry recognitions, thought leadership and more (see the methodology for details).

View all rankings: Top consulting firms in the UK 2025.

The top consulting firms in the UK for Outsourcing & Shared Services services:

2025 ranking
List view
Over 500+ consulting firms were assessed for the Outsourcing & Shared Services ranking in 2025, of which 42 qualify as a top player:

Diamond level

Platinum level

Boston Consulting Group
The company profile of Boston Consulting Group on Consultancy.uk is currently not activated....
EY
The company profile of EY on Consultancy.uk is currently not activated....
Capita
The company profile of Capita on Consultancy.uk is currently not activated....
Atos
The company profile of Atos on Consultancy.uk is currently not activated....
Kearney
The company profile of Kearney on Consultancy.uk is currently not activated....
PwC
PwC does not have an active profile on Consultancy.uk....
IBM Consulting
The company profile of IBM on Consultancy.uk is currently not activated....
Capgemini Invent
Capgemini Invent is Capgemini Group’s innovation, design, and transformation powerhouse, accelerating ideas into prototypes and scalable real-world solutions that help our clients get the future they want. Disruption is everywhere, intensifying the need for businesses ...
Bain & Company
Bain & Company is not a partner of Consultancy UK....
Infosys
The company profile of Infosys on Consultancy.uk is currently not activated....
CGI
Founded in 1976, CGI is among the largest independent IT and business consulting services firms in the world. With 90,000 consultants and professionals across the globe, CGI delivers an end-to-end portfolio of capabilities, from business consulting and strategic IT to ...
The Hackett Group
The company profile of The Hackett Group on Consultancy.uk is currently not activated....
PA Consulting
We believe in the power of ingenuity to build a positive human future. As strategies, technologies, and innovation collide, we create opportunity from complexity. Our diverse teams of experts combine innovative thinking and breakthrough technologies to progress further...
Wavestone
The Company profile of Wavestone on Consultancy.uk is currently not activated....
Cognizant
The company profile of Cognizant on Consultancy.uk is currently not activated....
Elixirr
The Challenger Consultancy Elixirr is a global award-winning challenger consultancy. With roots in strategy consulting, their capabilities are constantly evolving as they grow, ranging from business model innovation to digital transformation. Founded in 2009 by Stephen...
Protiviti
The company profile of Protiviti on Consultancy.uk is currently not activated....

Gold level

BearingPoint
BearingPoint is an independent management and technology consultancy with European roots and a global reach. The company operates in three business units: Consulting, Products, and Capital. Consulting covers the advisory business with a clear focus on selected business...
Clarasys
The Company profile of Clarasys on Consultancy.uk is currently not activated....
Tata Consultancy Services
The company profile of Tata Consulting Service on Consultancy.uk is currently not activated....
ISG
The Company profile of ISG on Consultancy.uk is currently not activated....
Capco
Capco, a Wipro company, is a global technology and management consultancy specializing in driving digital transformation in the financial services industry. With a growing client portfolio comprising of over 100 global organizations, Capco operates at the intersection ...
Oliver Wyman
Oliver Wyman is a global leader in management consulting. With offices in over 70 cities across 30 countries, we combine deep industry knowledge with specialized expertise in strategy, operations, risk management, and organization transformation. Our more than 7,000 pr...
Wipro
The company profile of Wipro on Consultancy.uk is currently not activated....
Fujitsu
Fujitsu does not have an active company profile on Consultancy.uk....

Silver level

Bronze level

View all 2025 rankings

About the Top consulting firms ranking

Our ranking sets out to answer one basic question: what are the top consulting firms in the UK?

The consulting industry of the UK is home to hundreds of consulting firms – large, mid-sized, boutique and niche consultancies – serving clients across all industries and segments, and specialised in every conceivable area of expertise. Our guide of top consulting firms showcases the industry’s leading players based on the region’s most extensive database of industry insights.

The ranking consists of top consulting firm lists across 30+ areas of expertise (strategy, management, finance, supply chain, sustainability, etc) and 30+ sectors (financial services, public sector, energy, consumer goods, industry, etc), as well as a number of topic-oriented rankings.