David Hewitt

Overview

David Hewitt is a Principal and Practice Leader in Ryan’s M&A Tax Advisory practice, based in London and advising clients globally. With more than 20 years of experience in transaction tax, including over a decade as an M&A tax partner within leading international firms, David supports corporate and private equity clients on complex domestic and cross-border transactions across multiple jurisdictions. He advises on acquisitions, disposals, IPOs, carve-outs, international reorganizations, joint ventures, and separation projects, delivering commercially grounded tax strategies aligned with broader business objectives.

David is recognized for his partner-led, hands-on approach to transaction execution. He frequently works alongside clients and advisors at the negotiating table, providing real-time guidance on structuring, due diligence, and risk mitigation while coordinating specialist teams across global markets. His experience spans high-profile and multijurisdictional transactions across the technology, consumer, industrial, and energy sectors. At Ryan, David is focused on building a globally integrated M&A tax advisory platform within the world’s largest standalone tax practice, delivering disciplined execution, technical rigor, and cohesive advice that helps clients manage risk and unlock long-term value.

Experience

Principal, Practice Leader – UK M&A Tax Advisory, Ryan, London office

• Leads international M&A tax advisory engagements across domestic and cross-border transactions

• Advises multinational corporate and private equity funds on structuring, due diligence, carve-outs, and separation projects

• Acts as global tax lead on complex, multijurisdictional transactions, coordinating specialist teams across territories

Independent M&A Tax Adviser, Hewitt Capital Advisory, London

• Provided senior-led advisory services to corporate and private equity clients on international transactions

• Delivered structuring, due diligence, and negotiation support on complex cross-border deals

Partner, KPMG, London

• Led large corporate and private equity M&A tax engagements across global transactions

• Advised on structuring, due diligence, IPOs, and international reorganizations

Partner – Head of M&A Tax, Grant Thornton UK, London

• Led international transaction tax and private equity tax teams across Funds, Deal Execution, and Value Creation divisions

• Directed global tax due diligence, structuring, funds flow, and SPA advisory on complex cross-border transactions

• Oversaw advisory services to private equity funds and portfolio companies throughout the investment lifecycle

Director, Ernst & Young, London

• Advised multinational corporate and private equity clients on cross-border mergers, acquisitions, and carve-outs

Director, Grant Thornton UK

• Senior member of the Transaction Tax and Private Equity team, supporting international deal activity

Tax Consultant, Simmons Gainsford LLP Tax Trainee, Deloitte UK, London

Tax Trainee, Deloitte UK, London