Simon was appointed the hull underwriter in September 2004 having previously deputised on the account for the last ten years. In all, he has 30 years' experience in marine underwriting, and that has enabled him to gain a strong grounding in statistical research, analysis and risk management. He is well known in the marine market and is a past chairman of the Joint Hull Committee and Chaired the Statistics Sub Committee.

He served on the Joint War Committee and the International Union of Marine Insurers facts and figures committee. He sits on a number of shipping related committees. He represents London marine property underwriters on the Lloyd's Salvage group. He is a Fellow of the Chartered Insurance Institute.