Andrew Winyard

Andrew Winyard is a very experienced Lloyd’s Underwriter, having spent his entire 40 year career underwriting for Atrium Syndicate 609 in Lloyd’s, before retiring in January 2026.  A specialist in the US Casualty Market, he was Head of Casualty Treaty at Atrium for 26 years, and a well-recognised market lead in the US Casualty Treaty sector. In addition to his underwriting role, Andrew also managed all the outward reinsurance purchasing at Atrium for the last 25 years and has extensive knowledge of the outward reinsurance market and buying process.  At Atrium he handled all his own contract wordings for both his inward account, and the outward purchasing giving him a unique view across the business overall.

Andrew qualified as a Fellow of the Chartered Insurance Institute in 1992, and was the initial Chair of the LMA Casualty Treaty Panel from its formation in 2002.  He has been a panel speaker at a number of the major US industry conferences including PCI and NCCI over the years. 

Andrew spent eleven years as an Executive Director of Atrium’s Managing Agency, as well as being a member of the core operating committees in the business: Investment; Reserving; Underwriting Review and Reinsurance Buying.  He is an experienced peer reviewer across a range of classes of business, including professional indemnity (US and International), general liability Insurance (US and International), as well as US property binders, all of which he peer reviewed within Atrium.