Tristan John Gemmill (born 6 June 1967) is an English actor, most notable for his roles as Dr Adam Trueman on Casualty, and Robert Preston in Coronation Street. He was educated at Holmewood House School, Royal Tunbridge Wells, Kent, up to the age of 13. He then won an Academic Scholarship to Tonbridge School.
★5.7An Enemy Within
William Wingate
2025
★6.9Çıldırış
Officer Nash
2005
★5.7Maceraperest Midas Kutusunun Laneti
Isambard Black
2013
★7.6Söz
Andrew
2003
★5.6Hannibal: Roma'nın En Büyük Kâbusu
Varro
2006
★3.8Gladiatress
Firmus
2004
★6.3Nancherrow
Walter
1999
★4.8Flying Blind
Robert
2013
The Life of Jesus
Andrew
2003
Comet: A Great British Air Disaster
Self - Narrator (voice)
2013
★7.5Death in Paradise
Marc Campese
2011
★8.2Herkül Puaro
Major Despard
1989
★8.2The Crown
Dr Richard Thompson
2016
★7.5Call the Midwife
Clifford Raines
2012
★6.2Casualty
Adam Trueman
1986
★6.9Citadel
Banker
2023
★7.6Father Brown
Inspector Neil Beckett
2013
★3.6Loose Women
Self
1999
★6.8Judge John Deed
Dr. David Barbara
2001
★6.3Agatha Christie - Yedi Kadran
Doctor Jackman
2026
★6.3Meadowlands
David York
2007
★6.7Red Cap
2003
★6.3Winston Churchill: The Wilderness Years
Schoolboy
1981
★4.2Mayo
Lawrence Davis
2006
★7.3Distant Shores
Duncan McCallister
2005
The Golden Hour
Sgt Jim Travis
2005
★8.0Nancherrow
1999
