Claire Harris

Partner | London


Client services contact Laura Wilson

Claire is a partner in the private client and tax team.

Claire advises on tax, trust and estate planning for individuals and families, based both in and outside of the UK. Claire's non-UK clients are often based in or hail from the US or India and she has extensive experience advising on US/UK and India/UK cross-border matters.  In particular, she provides advice where different countries view entities or structures differently, and balances the impact of having two countries asserting taxing rights, utilising Treaties and tax credits to minimise double taxation.
 

Claire's work includes:
  • Estate and lifetime tax and succession planning, including the preparation of Wills, lifetime trusts and Lasting Powers of Attorney and advising on the tax and practical implications of passing personal and business assets down to the next generation.

  • Advising on UK tax residence and preparing non-resident individuals, and their structures, for arrival in the UK.

  • The creation and maintenance of trust and corporate structures to assist in succession and tax planning, and advising the trustees of onshore and offshore trusts which hold wealth for both UK-based and international families.

  • Providing guidance on philanthropy, governance and succession and the introduction of the next generation to the family's wealth or the family business, which is often in conjunction with single or multi-family offices.

  • Advising on the creation and maintenance of family offices, both in the UK and abroad, covering jurisdiction and structure choice and risk management. This involves coordinating advice from across the firm to meet the diverse needs of family offices.

Claire believes that the key to her role as advisor is forming strong relationships to understand her clients' main drivers and objectives to enable her to provide advice that is bespoke and timely.

Claire is head of the European family office team and co-heads the Global India team.

Talks

  • 'Across the pond: Hot topics in US/UK eral estate, tax, and estate planning,' Withers Los Angeles - November 13, 2025, speaker 

  • 'Across the pond: Hot topics in US/UK eral estate, tax, and estate planning,' Withers Los Angeles - November 12, 2025, speaker 

  • Investment of Trust Assets, IBC Conference, April 2016

  • International Trusts & Private Client Forum, ITPC Conference, Guernsey, April 2016

  • Wealth Preservation & Tax Planning for Landed Estates, IBC Conference, February 2016

  • Changes to Owner Managed Business Taxation, IBC Seminar, October 2015

  • The Future of Offshore Centres, Lexis Nexis panel forum, September 2015

Admissions

  • England and Wales, 2008


Education

  • Oxford University, B.A. (Hons) Physics and Philosophy


Languages

  • English

Key dates

  • Year joined: 2006
  • Year became partner: 2017