Olympic swimmer specializing in the butterfly and freestyle strokes who has also represented Great Britain at the FINA World Championships and the LEN European championships. He won silver in the 4x200m freestyle relay and the 4x100m medley relay at the Rio Olympics in 2016
He received a swimming scholarship to Millfield in Somerset when he was 13 years old.
His first major medal was bronze at the 2012 European Junior Championships in Antwerp. It was for the 400m freestyle race.
His parents are Cath and Andrew Guy.
He and Adam Peaty were members of the England 4x100m medley relay Olympic race in which they won silver.