Bonnar provides the voice and motion capture of Edward “Blackbeard” Thatch in the 2013 video game Assassin’s Creed IV: Black Flag. He also provides the voice and motion capture for Townsend in the 2016 game Battlefield 1. He also features in the Doctor Who series Doom Coalition from Big Finish Productions, where he portrays the Eleven, a villainous Time Lord who retains the personalities of his past incarnations in his mind.

His theatre performances include Bosola in The Duchess of Malfi at the Old Vic, London in 2012, Philistines at the Lyttelton, National Theatre in May 2007, Phil in Mammals in a national tour in 2006, David in A Girl in a Car with a Man at the Jerwood Theatre Upstairs in December 2004, Benedick in Much Ado About Nothing at the Salisbury Playhouse in September 2004, Cyrano de Bergerac at the National Theatre in 2004 and Parade at the Donmar Warehouse in September 2007.

Bonnar was born in Edinburgh and attended Leith Academy. He married actress Lucy Gaskell on 28 December 2007. Their first child, Martha, was born in July 2011, and their second, Samuel, in June 2015.

On television, Bonnar has appeared as Peter Mayhew in BBC1’s New Blood and Chris in the highly successful Channel 4 comedy Catastrophe, a role which he reprised in the following series. He also plays the Rev. Adam Collingbourne in ITV’s Home Fires, John Halliday in Undercover, as well as regular Duncan Hunter in Shetland for BBC1. Other television credits include Vera, Grantchester, Case Histories, The Paradise, Doctor Who, Psychoville, Taggart, Phoneshop and Paradox. In 2005, he played regular Bruno Jenkins in the BBC1 series Casualty. 2018 he played Dr Neil Sommer in the Channel 4 series Humans.

Bonnar also played regular Denny Hampton in the BBC World Service soap Westway from 1997 to 2005.

Mark Bonnar (born 19 November 1968) is a Scottish actor known for his roles as Duncan Hunter in Shetland, Bruno Jenkins in Casualty, Detective Finney in Psychoville, DCC Mike Dryden in Line of Duty, Colin Osborne in Unforgotten, Townsend in Battlefield 1 and Field in Summer of Rockets.