Gareth Mostyn

Independent Member of Council since 1 August 2025

Member of Finance and Investment Committee
Member of Audit and Risk Committee
Member of and Endowment and Investment Committee

Gareth Mostyn has broad experience spanning the corporate and not-for-profit sectors, drawn from board-level roles across finance, strategy and general management. He is currently Non-Executive Director of South London & Maudsley NHS Foundation Trust (where he chairs the Finance, Performance & Investment Committee) and Non-Executive Director of Sovereign Network Group (SNG) Housing Association (where he chairs the Audit & Risk Committee).

Gareth was Chief Executive of the Church Commissioners for England from 2020-2025, prior to which he was the Chief Finance & Operations Officer for the Church of England (2018-2020).  Previously, Gareth held senior roles in large multi-national companies, including at De Beers Group where he was Chief Financial Officer and latterly the Board Director responsible for Strategy and Corporate Affairs. He is a Chartered Accountant (ICAEW) and a graduate of Durham University in Business Economics.

 

Register of Members' Interests 2025/26

Organisation in which interest exists	Nature of Interest (directorship, shareholding, membership etc.)
Sovereign Network Group (SNG) Housing Association	Non-Executive Director
South London & Maudsley NHS Foundation Trust	Non-Executive Director
University of Exeter	Familial connection to current student