Portrait of Diane Seymour-Williams

Diane Seymour-Williams

Investment Principal

Diane has over 30 years of global investment experience, as a portfolio manager, CIO and as a CEO based in Asia and London, primarily for Morgan Grenfell and Deutsche Asset Management and boutique businesses. 

She is a non-executive director of Mercia Asset Management Plc, SEI Investments (Europe) Ltd and abrdn Private Equity Opportunities Trust Plc. She is also an independent valuation committee member, advising on private market and pre-IPO investments.

Diane has chaired Investment, Risk, and ESG committees and in 2021 completed Cambridge University’s Sustainable Finance, with a focus on impact investing and measurement.

She is active on the Investment Committees of Newnham College, Cambridge and the Canal & River Trust.  

She holds an MA in Economics from the University of Cambridge.

Diane Seymour-Williams - Profile on The Marque