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Personal Info
Known For
Acting
Birthday
January 23, 1973
Place of Birth
Oldham, Greater Manchester, UK
Also Known As
- Keiran O'Brien
Kieran O'Brien
0.9 Popularity
Biography
O'Brien grew up in nearby Royton and was educated at the Bishop Henshaw Roman Catholic Memorial High School in Rochdale. He began acting at an early age and was the star of a BBC TV series Gruey by the time he was 15. He also featured in several other series at the time in one-off or recurring roles. In 1993, he played the role of Craig Lee in Coronation Street and then the role of Lee Jones in Children's Ward. In 1993 he also became a regular in the detective series, Cracker, playing Mark, the son of central character Robbie Coltrane. In 1999 he made his cinema debut with the film Virtual Sexuality and began a reunited with Cracker director Michael Winterbottom for 24 Hour Party People in 2002 and, in '04, for the controversial 9 Songs, which included scenes of genuine sexual intercourse between O'Brien and his leading lady Margo Stilley. His role had earned him the credit of being the only mainstream British actor who has been shown ejaculating in a mainstream UK-produced feature. Since 9 Songs, O'Brien has made two further films with Winterbottom; A Cock and Bull Story and The Look of Love. Recent regular TV roles include Holby Blue and The Syndicate.
Known For
6.6
Mr Harkness
A Thousand Blows
2025
0.0
Stuart
The Family Pile
2023
8.3
Pegla
Andor
2022
5.5
Ben
The Following Year
2021
8.0
Self - Narrator
The Cars That Made the World
2020
8.4
James Tartt
Ted Lasso
2020
7.6
Woody
Years and Years
2019
8.7
Khodemchuck
Chernobyl
2019
4.3
PC Smalls
Holmes & Watson
2018
6.8
Peter Wilkes, a Farrier
Peterloo
2018
Credits
A Thousand Blows
as Mr Harkness
2025
6.6
The Family Pile
as Stuart
2023
0.0
Andor
as Pegla
2022
8.3
The Following Year
as Ben
2021
5.5
The Cars That Made the World
as Self - Narrator
2020
8.0
Ted Lasso
as James Tartt
2020
8.4
Years and Years
as Woody
2019
7.6
Chernobyl
as Khodemchuck
2019
8.7
Holmes & Watson
as PC Smalls
2018
4.3
Peterloo
as Peter Wilkes, a Farrier
2018
6.8
Trucking Hell
2018
6.0
In the Dark
as DS Gary Kenny
2017
6.4
The Watchman
as Lee Simpson
2016
6.0
Grantchester
as Arthur Evans
2014
7.3
Glue
as Thomas Bray
2014
6.1
Prey
as Phil Prentice
2014
6.7
The Look of Love
as Jimmy Humphries
2013
5.6
Bluestone 42
as Nutsack
2013
7.5
Spike Island
as Poster Vendor
2012
6.4
Cuckoo
as Goran
2012
6.8
Love Life
as Dez
2012
6.0
Death in Paradise
as Danny
2011
7.4
Vera
as Bobby Salter
2011
7.4
The Shock Doctrine
as Narrator (Voice)
2009
7.1
Moving On
as Shane
2009
7.1
The Last Enemy
as Wafa
2008
6.6
Secret Diary of a Call Girl
as Al
2007
6.9
Indie Sex
as Self
2007
5.2
Holby Blue
as Constable Robert Clifton
2007
7.1
Goal II: Living the Dream
as Hughie McGowan
2007
6.0
Cracker: Nine Eleven
as Mark Fitzgerald
2006
7.0
Elizabeth David: A Life in Recipes
as Charles Gibson Cowan
2006
2.0
Life on Mars
as Davie Mackay
2006
7.8
Goal!
as Hughie McGowan
2005
6.8
A Cock and Bull Story
as Gary
2005
6.2
Bloodlines
as Mark Hopkin
2005
7.0
9 Songs
as Matt
2004
5.6
New Tricks
as Michael Jacobs
2004
7.4
🎬
The Terry and Gaby Show
2003
5.0
Blue Murder
as Terry Camerton
2003
6.7
Burn It
as Andy Grimshaw
2003
6.3
🎬
The Afternoon Play
as Sean Tyler
2003
0.0
24 Hour Party People
as Nathan
2002
7.0
Band of Brothers
as Allen Vest
2001
8.6
Messiah
as Eric Metcalfe
2001
7.2
Jason and the Argonauts
as Actor
2000
6.1
Virtual Sexuality
as Alex Thorne
1999
5.2
Dalziel & Pascoe
1996
6.4
Cracker
1993
6.6
Cracker
as Mark Fitzgerald
1993
6.6
Cracker
as Mark
1993
6.6
Heartbeat
as Neil
1992
7.0
Children's Ward
as Lee Jones
1989
3.5
Monster Maker
as Matt Banting
1989
6.5
Bellman and True
as The Boy
1987
6.5
Casualty
as Chris Miller
1986
6.1
Casualty
as Billy
1986
6.1
Dramarama
1983
6.7