William Ash (born 13 January 1977) is a British actor.
 He is known for roles in the television dramas "Where the Heart Is" (1997–98), "Clocking Off" (2001–02), "Waterloo Road" (2009–11) and "The Tunnel" (2016).
 His film appearances include "Mad About Mambo" (2000) and "Hush" (2008).
Mafiosa, full title Mafiosa, le clan is a French crime drama television series, which premiered on Canal+ on December 6, 2006.
 The series was created by Hugues Pagan.
The Tunnel (French: Tunnel ) is a British-French crime drama television series, adapted from the 2011 Danish/Swedish crime series "The Bridge" ("Broen"/"Bron").
 "The Tunnel" began broadcast on 16 October 2013 on Sky Atlantic in the UK, and on 11 November 2013 on Canal+ in France.
 The series stars Stephen Dillane and Clémence Poésy as British and French police detectives Karl Roebuck and Elise Wassermann, respectively.
 The plot follows the two detectives working together to find a serial killer who left the upper-half body of a French politician and the lower-half of a British prostitute in the Channel Tunnel, at the midpoint between France and the UK.
 They later learn that the killer – who comes to be nicknamed the "Truth Terrorist" – is on a moral crusade to highlight many social problems, terrorising both countries in the process.
 As the series progresses, the killer's true intention is revealed.
Hush is a 2008 British horror film about a young couple on a motorway journey who are drawn into a game of cat and mouse with a truck driver following a near accident.
 The film is directed by former BBC Radio 1 DJ, Mark Tonderai, and stars William Ash and Christine Bottomley.
 The film was produced by Warp X, UK Film Council and Film4 who supplied the funding for the film.
 The film was distributed by Optimum Releasing.
Crime and Punishment (French: "Crime et châtiment") is a 1935 French crime drama, produced by Général Productions and distributed by Les Grands Spectacles Cinématographiques.
 It was directed by Pierre Chenal and produced by Michel Kagansky starring Harry Baur along with Pierre Blanchar.
Braquo is a French crime drama television series created by Olivier Marchal.
 It was produced by Capa Drama with the participation of Canal+ in association with Marathon Group, Be-Films and RTBF.
 Braquo was first broadcast in France from 12 October to 2 November 2009.
Mad About Mambo is a 2000 British/Irish co-production, filmed in Dublin but set in Belfast, written and directed by John Forte.
 It stars William Ash, Keri Russell and Brian Cox.
Kelli Alice Giddish (born April 13, 1980) is an American television, stage, and film actress.
 She is best known for her role as NYPD Detective Amanda Rollins  in the NBC television legal crime drama series "" (2011–present).
 Previously, she portrayed Di Henry on the ABC soap opera "All My Children" (2005–07), as well as starring in short-lived Fox crime drama series "Past Life" (2010); and the NBC crime drama series "Chase" (2010–11).
Conviction is a British television crime drama that premiered on BBC Three on 7 November 2004.
 The six-part series stars William Ash, David Warner, Ian Puleston-Davies, Reece Dinsdale, Nicholas Gleaves, Laura Fraser, Jason Watkins and Zoe Henry.
The Clockmaker (French: L'Horloger de Saint-Paul , also known as The Clockmaker of St. Paul and The Watchmaker of St. Paul) is a 1974 French crime drama film directed by Bertrand Tavernier.
 Based on the novel "L'Horloger d'Everton" by Georges Simenon, it tells the story of a widowed father who first discovers how little he knows about his teenage son, who kills a man and with his girl goes on the run, but then decides that whatever their faults he will stand by the pair.

Question: Which British French Crime drama series did William Ash star in?
Answer: The Tunnel