Grant Thornton UK to appoint former BCG boss as chairman

The announcement follows the Grant Thornton UK acquisition by Cinven. Credit: T. Schneider / Shutterstock.com

Grant Thornton UK is set to appoint Stuart Quickenden, a seasoned advisor from BCG, as its new chairman, reports Sky News.  

Quickenden’s current responsibilities also include the chairmanship of Octopus Investments, which supports a variety of early-stage companies, the report said.

Quickenden brings 20 years of consulting expertise, advising clients across industries and geographies on strategy, operations, and transformation, according to BCG website.  

Before joining BCG, he managed brands in the consumer goods sector at Procter & Gamble. 

He also served as a non-executive board member for the UK’s department for business, energy, and industrial strategy (BEIS), where he is also a member of the audit, risk, and assurance committee (ARAC). 

The announcement follows the firm’s acquisition by Cinven, a private equity firm, after a majority stake sale was agreed upon by Grant Thornton’s UK partners in 2024.  

The transaction valued the accountancy firm at approximately £1.5bn. 

Cinven has chosen not to comment on the appointment. 

The leadership change occurs in the context of Grant Thornton’s UK partners receiving an average remuneration of £682,000 in the previous financial year. 

The firm has been involved in skill development initiatives, such as the ‘AI and Digital Skills for Business Impact’ programme with Teesside University, aimed at bolstering digital and AI capabilities within businesses. 

Earlier in August 2025, Grant Thornton Advisors agreed to acquire Stax, a strategy consulting firm based in Boston, Massachusetts.  

Stax specialises in commercial due diligence, value creation, and exit planning services, and has a presence in major financial markets, assisting with both buy-side and sell-side transactions in mergers and acquisitions. 

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