A dry cargo specialist, Guy became a Baltic Exchange member in 1991, Shipbroker at JE Hyde & Co for seven years before joining Koch Industries, spending 10 years as a chartering manager and eventually Director, Ocean Freight for Koch Carbon LLC. After a further six years as Dry Cargo Managing Director at shipbroker Clarksons, joined Swire Bulk Pte Ltd, the deep sea ship owning and operating arm of the Swire Group. Shipping career has included broking, chartering, freight trading and operating.

He served as Chairman of the Baltic Exchange’s Freight Market Information Users’ Group in 2005 at a time of migration from OTC derivatives trading toward a modern FFABA contract. The period also saw the introduction of clearing to the FFA market which ultimately enabled the market to survive the disruptions of 2008. He has served on the Board of the Baltic Exchange since 2009, eventually as Chairman 2014- 2016 Chairing the shareholder sale to SGX in 2016, arguably the most important transition in the Baltic Exchanges’ 272 year history. Currently Chairman of The Sustainable Shipping Initiative.

Began his arbitration practice in September 2017. Practising full time since 2022.