Clare was for many years a partner in Allen & Overy LLP, latterly running the Private Client Department in that firm. In 2009 the department demerged and the practice transferred to the then new firm of Maurice Turnor Gardner LLP which Clare founded with colleagues and of which she is Senior Partner. Her main specialism is international tax and estate planning for UK and non-UK domiciled individuals and families with complex assets located in many jurisdictions, looking for solutions to the tax and structural challenges of global wealth. She also advises families and charities themselves in connection with the creation and activities of such entities. Clare has acted as a trustee of a number of charities. She currently chairs SafeLives and sits as a trustee of The London Clinic and the Childwick Trust. She chaired Barts Charity from 2000-2009.