Acting
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.
... 2021
PC Smalls
... 2018
Peter Wilkes, a Farrier
... 2018
Lee Simpson
... 2016
Jimmy Humphries
... 2013
Poster Vendor
... 2012
(segment "The Banker")
... 2012
Narrator (Voice)
... 2009
Hughie McGowan
... 2007
Mark Fitzgerald
... 2006
Charles Gibson Cowan
... 2006
Hughie McGowan
... 2005
... 2005
Vain Man
... 2004
Matt
... 2004
Nathan
... 2002
Alex Thorne
... 1999
Matt Banting
... 1989
The Boy
... 1987