|Born||1976 (age 42–43)|
|Occupation||Actor, writer, director|
Maskell was born in London. As a youngster, he played football for Long Lane JFC as a full back. He first trained in acting at the Anna Scher Theatre in Islington, London, where he attended classes from the age of 11, and studied at the Miskin Theatre, Dartford at North West Kent College from 1992. He later worked as a director at the Miskin Theatre.
Maskell's film career began in 1997 with an appearance as Schmuddie in Gary Oldman's directorial debut Nil by Mouth. His leading role in the 2011 thriller Kill List attracted positive reviews from critics and saw him nominated for the Best Actor award at the British Independent Film Awards.
Maskell's first television appearance was in 1991 in the ITV police drama The Bill. Between 1992 and 2002, he made a further five appearances on the show, portraying a different character each time. He has had one-off roles in a number of other popular British serial dramas such as Casualty, London's Burning, Soldier Soldier. His most regular television roles have been in the 2005 comedy series Mike Bassett: Manager, in the comedy sketch show The Wrong Door, and in the 2013–2014 thriller drama action series Utopia. Since 2015, he has been a series regular in sci-fi thriller Humans.
|1997||Nil by Mouth||Schmuddie|
|2000||Sorted||Record Shop Geezer|
|2001||Redemption Road||Leading Mugger|
|2004||The Football Factory||Rod|
|It's All Gone Pete Tong||Jack Stoddart|
|2006||Basic Instinct 2||Detective Ferguson|
|Rise of the Footsoldier||Darren Nicholls|
|Atonement||Soldier in Bray Bar|
|2010||The Shouting Men||Terry|
|Bonded by Blood||Craig Rolfe|
|Kill List||Jay||Nominated – British Independent Film Award for Best Actor|
|Jack Falls: Sid's Story||Sid|
|How to Stop Being a Loser||Hands Henry|
|Wasteland (known as The Rise in England)||Steven Roper|
|St George's Day||Jimmy McCudden|
|2015||Bone in the Throat||Lewis|
|2017||King Arthur: Legend of the Sword||Back Lack|
|2018||Happy New Year, Colin Burstead||Colin|
|1991||The Bill||Billy Potter||Episode: "Joey"|
|1992||Perfect Scoundrels||Dean||Episode: "Let No Man Put Asunder"|
|The Bill||Gary||Episode: "Fireworks"|
|1995||The Bill||Damien Burns||Episode: "Over the Top"|
|1996||Soldier Soldier||Para 1||Episode: "Money for Nothing"|
|London's Burning||Gary||Episode: "Episode No.9.8"|
|The Thin Blue Line||Football Official||Episode: "Come on You Blues"|
|1997||Casualty||Luke Lowther||Episode: "United... By Blood"|
|Chalk||Arse Face||Episode: "The Inspection"|
|The Bill||Warren Heskey||Episode: "Neighbours"|
|Wycliffe||Tully||Episode: "Old Crimes, New Times"|
|1998||Bramwell||Manky Matkin||Episode: "Our Brave Boys"|
|1998||Ultraviolet||Neil||Episode: "In Nomine Patris"|
|1999||The Murder of Stephen Lawrence|
|1999||Murder Most Horrid||Martin Greaves||Episode: "Whoopi Stone"|
|1999||The Bill||Frank Wilson||Episode: "Screwdriver"|
|2000||Silent Witness||Gary Lomax||Episode: "The World Cruise"|
|2002||The Jury||Chris Maher|
|2002||The Bill||Gary Roach||Episode: "013"|
|2004||Shameless||Corporal||Episode: "Episode No.2.0"|
|2005||The Inspector Lynley Mysteries||Martin Moran||Episode: "Word of God"|
|2005||Mike Bassett: Manager||Wirral Web Presenter|
|2007||Casualty||Tom Faulkner||Episode: "It Never Rains"|
|2008||The Wrong Door|
|2012||Silent Witness||Stuart Thompson||Episode: "Domestic"|
|2013–2014||Utopia||Arby / Piètre|
|2013||By Any Means||Joe Tyrus||Episode 2|
|2013||The Great Train Robbery||Buster Edwards|
|2015||Raised by Wolves||Michael|
|2015–2016||Humans||DS Peter Drummond|
|2018||No Offence||Dennis Caddy||Series 3|
- "bondedbyblood.co.uk". Archived from the original on 8 September 2010. Retrieved 16 December 2011.
- "heyuguys.co.uk". heyuguys.co.uk. Retrieved 16 December 2011.
- "ghostedthefilm.com". Retrieved 16 December 2011.
- "Miskin Theatre Company". December 2011. Archived from the original on 26 April 2012.