Tristan Gemmill (born 6th June 1967 in Kensington, London) appeared on Coronation Street in two roles: firstly in January 2000 as Leanne Battersby's drugs counsellor Will Griffiths; and he returned to the programme as Robert Preston between July 2015 and December 2019, having taken over that role from Julian Kay.
Gemmill lived in Tunbridge Wells for most of his childhood. While there, he was asked by chance to play a small part of a schoolboy in Winston Churchill: The Wilderness Years and was thus inspired to become an actor. At the age of fifteen his family immigrated to Australia where he studied Drama at Melbourne University, remaining in that country for the next ten years. Upon his return to Britain, one of his first television roles was in 1998 in The Mrs Bradley Mysteries.
After this he went on to have a series of starring and regular roles in Nancherrow, Sam's Game, The Bill, London's Burning, Grass, Distant Shores, Strictly Confidential, Cape Wrath and Casualty.
He is married to actress Emily Hamilton.