Glyn joined the Board in September 2012. Glyn is chairman of Aspen Insurance Holdings Limited, a New York listed specialty lines insurance and re-insurance business; he became the chair in May 2007. He is also chairman of Aspen Insurance UK Limited, a principal operating subsidiary of the Aspen Group. Glyn was formerly the chairman of Towry Holdings Limited between 2006 and 2011. He also served as chairman of Hermes Fund Managers from 2008 to 2011 and was chairman of the sister company BT Pension Scheme Management for a part of this period. Glyn was chief executive officer of the independent investment group, Thames River Capital, from 2005 to 2006. From 2000, he served as chief executive officer of Gartmore Investment Management in the United Kingdom for four years.
Before this, Glyn was chief executive officer of Coutts NatWest Group and Coutts Group, having joined in 1997. In 1991, Glyn joined Standard Chartered in Hong Kong where he became the general manager of Global Private Banking. He was a consulting partner with Coopers & Lybrand/Deloitte Haskins & Sells Management Consultants from 1981 to 1990. Glyn is a graduate of Cambridge University and a Fellow of the Institute of Chartered Accountants in England & Wales.