He became well known for his role as
Tyres O'Flaherty, the bicycle riding raver, in two episodes of the
Channel 4 sitcom
Spaced, and for his appearances at the
Edinburgh Fringe and the
Melbourne Comedy Festival. He also was a small character in episode 2 "The Model" of
15 Storeys High. He has appeared in all three series of
The Maltby Collection on Radio 4 as Des Wainwright, an eccentric security guard who keeps repeating himself and reminding people he was in the
SAS. He plays the part of Benny "Deadhead" Silver in the BBC drama series
Luther. In 2010, he had a major role in the film
Burke & Hare alongside his
Spaced co-stars
Simon Pegg and
Jessica Hynes. In 2011, he starred in British horror film
Kill List. The film received critical acclaim, and earned him the
"Best Supporting Actor" Award at the
2011 British Independent Film Awards. In 2013, he has appeared in an episode of
BBC One's
Ripper Street as
George Lusk, and the critically acclaimed
Channel 4 shows
Utopia as Detective Reynolds and
Black Mirror in the episode "
White Bear" as Baxter. He also starred in
A Field in England as the main antagonist, the alchemist O'Neill. He also played Roddy in
Father Figure. In November 2013 he appeared in the third episode of the
BBC Two Mitchell and Webb comedy
Ambassadors as Mr Jackson. In 2014, he played Micky Murray in
BBC Four's
The Life of Rock with Brian Pern. To coincide with the
opening stages of the
Giro d'Italia in May 2014,
Michael Smiley: Something to Ride Home About was a
travelog programme for
BBC Northern Ireland, directed by
George Kane, featuring Smiley cycling around Northern Ireland and meeting local people. A second series was commissioned for 2015. In 2019, Smiley co-starred with
Elijah Wood and
Martin Donovan in the film
Come to Daddy directed by
Ant Timpson. In 2020, he starred in
Dead Still, a six-part Irish-Canadian television drama series, alongside
Eileen O'Higgins & Kerr Logan. It premiered on May 18, 2020 on
Acorn TV and May 15, 2020
Citytv. The series is a co-production between Ireland's Deadpan Pictures and Canada's
Shaftesbury Films and is written by John Morton, and directed by
Imogen Murphy and Craig David Wallace. In 2021, Smiley appeared in the lead role in
The Toll, a Welsh black comedy film later released in the United States with the title
Tollbooth. In 2025 he appeared in
Alien: Earth as the character 'Shmuel'. ==Personal life==