Jones has acted with the Royal Shakespeare Company, and at Shakespeare's Globe Theatre in London. He has made appearances in a number of television productions including This Life, Holby City, Spooks, Murphy's Law, Waking the Dead and Torchwood. Perhaps his most significant role for BBC television, however, has been as Detective Inspector Russell Bing in the police drama55 Degrees North in which he played an outspoken, opinionated and at times humorous police officer, in a complex and intricately crafted series. He also played Detective Sergeant Ray Lloyd in police drama Murder Prevention. His two most renowned appearances in Hollywood blockbusters were as Hogg the Whaler in Master and Commander: The Far Side of the World, and Tecton, a soldier in Troy. In 2001 he also portrayed Igraine's second husband Uther Pendragon in the American TV miniseriesThe Mists of Avalon. He played Irfon in S4C's Con Passionate, Josi in Sian James'Calon Gaeth, and Bryan Jones in Y Pris. In 2009 he was a guest in the BBC Cardiff Singer of the World competition, broadcast on 11 June on BBC Two Wales. Jones auditioned for ' but did not get the part. However, he was later offered the part of Captain Canady for the sequel, '. He appears prominently in the opening sequences and says he played the part with "a posh Welsh accent".
Stage
Lord Grey and Henry, Richard III, Royal Shakespeare Company, London, 1993
Leontes, The Winter's Tale, Globe Theatre, London, 1997
Milantius, The Maid's Tragedy, Globe Theatre, 1997
Mark Antony, Julius Caesar, Globe Theatre, 1999
Taurus, Diomedes, and Sextus Pompeius, Antony and Cleopatra, Globe Theatre, 1999
Appeared as Billy, Cardiff East, as Willy Nilly, Under Milk Wood, and as Bonario, Volpone, all National Theatre, London; as Costard, Love's Labour's Lost, as Lorenzo, The Merchant of Venice, and as Ferdinand, The Tempest, all Royal Shakespeare Company, Stratford-upon-Avon, England; as Tristram, Morte d'Arthur, and as Florizel and Antigonas, The Winter's Tale, both Lyric Theatre, London; as a pioneer, Ingolstadt, Gate Theatre; and as Danton and father, Snow Palace, Tricycle Theatre, Kilburn, Yorkshire, England
Sergeant-Major Reg Drummond in Privates on Parade by Peter Nichols at Noël Coward Theatre, 1 December 2012 – 2 March 2013
Radio
Appeared in radio broadcasts of Cadfael and Cocaine.
Samson in Julian Simpson's The Listener
Filmography
Film
Television
Video games
Personal life
On 11 September 2016 Jones took part in the Great North Run to raise funds for Bloodwise. In April 2018 Mark ran the inaugural Wales Marathon held in Newport
