Property Treaty

The Property Treaty account divides relatively evenly between North American and International Business. The majority of the book is property catastrophe excess of loss reinsurance but the Syndicate also writes property risk excess, pro-rata and retrocession business, including regional retrocession.

The North American account comprises mainly mutual, regional insurance companies with which the underwriters have long-standing relationships. These companies typically focus on rural areas, writing personal lines, and in some cases, farms and small commercial business.

The International account has a large UK, Europe, Australasia, and Japan content, but it also serves clients across Africa, Asia, and the Americas.

Nick Destro

Active Underwriter

Nick joined the White Bear Group in 2016 to help establish Syndicate 5886 at Lloyd’s of which he is now Active Underwriter. Prior to this Nick worked for over 35 years in both the Lloyd’s and Company markets, focusing on primarily US Treaty Reinsurance. Before joining White Bear Group in 2016, Nick was the US Treaty Underwriter for Cathedral Syndicate from 2002. Prior to that he was head of the Treaty Reinsurance team at SVB Syndicates. He started his career as an underwriting assistant in 1985 at the Excess Ins Co.

+44 (0)203 889 8090

Mark Wilson

Senior Underwriter

Mark has worked in the Lloyd’s market since 1987. He started his career at Syndicate 566 and went on to become one of the founders of Cathedral Syndicate 2010. He has experience writing all short tail reinsurance classes but specialises in non-marine Property Treaty. Mark is also responsible for Outwards Reinsurance placements at Blenheim.

+44 (0)203 889 8095

Simon Dean


Simon started his career at Bankside Syndicate 566 in 1990 working in claims. He then joined Cathedral Syndicate 2010 at its inception in 2000 to work on the new Non-Marine Treaty account with increasing focus on underwriting International Treaty and Crop Reinsurance. He joined Blenheim in 2016 and continues to specialise in both International Treaty and Crop Reinsurance.

+44 (0)203 889 8093

Geraldine McMillan


Geraldine has worked in the London Market for over twenty-five years. She spent some sixteen years until 2016 at Cathedral, initially as a syndicate analyst prior to joining Syndicate 2010’s Non-Marine Property Treaty team in 2005 to underwrite with a focus on International Property Treaty. She joined Blenheim in 2016 and continues to focus on International Property Treaty.

+44 (0)203 889 8091

Michael O’Sullivan


Michael has worked in the London Market since 2011 when he joined the Non-Marine Property Treaty team at Cathedral Syndicate 2010. He joined Blenheim in 2016, focused on the International Property Treaty book.

+44 (0)203 889 8092

Alasdair Rykens


Alasdair started his insurance career in 2002 at Lloyd’s broker BMS in the claims department and then moved to broking North American treaty business where he was a senior broker. In 2010 he moved to Tokio Marine HCC on the underwriting side specialising in North American property cat and risk xl. In 2017 he joined Blenheim to underwrite the North American treaty account. Alasdair has an Advanced Diploma in Insurance (ACII) and BA (Hons) from Newcastle University.

+44 (0)203 889 8097

Andrew Swain


Andrew joined Cathedral in 2007 as a Catastrophe Loss Modeller also working there with Cathedral Syndicate 3010’s Cargo and Specie underwriting team. In 2011 Andrew moved away from insurance to work in the transport industry with a UK based haulage firm. He joined Blenheim in 2016 as an Exposure Management Analyst before joining the North American treaty team in 2018.

+44 (0)203 889 8096