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Brian O’Sullivan is currently Chief Operating Officer of a specialist asset manager, Thomas Miller Investment. Previously he was a Senior Vice President at State Street Bank. He has spent most of his career in the asset management industry.

Brian is a Fellow of the Institute of Chartered Accountants (FCA) and a Fellow of the Association of Corporate Treasurers (FCT).

He graduated in 1975 from Queen Elizabeth College, London (now part of King’s College). He later completed MA and PhD degrees with Birkbeck, London. He is also an Honorary Research Associate at UCL’s Bartlett School.

His research interests are mainly twentieth century economic and financial history. His book From Crisis to Crisis: The Transformation of Merchant Banking, 1914–1939 was published by Palgrave Macmillan in 2018.

Brian has been awarded the 2019 BAC Wadsworth Prize by the Business Archives Council. His book was judged to have made an outstanding contribution to the study of British business history. He shared the prize with Professor Priya Satia of Stanford University in California.