Question: Which Irish actor plays the fictional character Stuart Alan Jones from Queer as Folk?

Context paragraphs:
Hook (Once Upon a Time): Captain Killian "Hook" Jones is a fictional character in ABC's television series "Once Upon a Time".  He is portrayed by Irish actor/musician Colin O'Donoghue, who became a series regular in the second season after making recurring appearances and has become a fan favorite since his debut.  He is based on the character from J. M. Barrie's play, "Peter and Wendy".

Homespun (band): Homespun was an English pop/folk band formed in 2003 by Dave Rotheray, ex-songwriter and musician from the 15 million record selling band The Beautiful South.  Homespun was originally a side project, designed as an outlet for Rotheray’s solo compositions.  Other band members were Sam Brown, Melvin Duffy, Tony Robinson, Clare Mactaggart, Gary Hammond and Alan Jones.

Stuart Dunne: Stuart Dunne is an Irish actor and artist.  He is best known for his dark and violent portrayal of the character Billy Meehan on the Irish soap opera "Fair City".  He was nominated at the 2003 Irish Film and Television Awards for Best Actor in a Television Drama for "Fair City".

Aidan Gillen: Aidan Gillen ( ; born Aidan Murphy; 24 April 1968) is an Irish actor.

List of fictional actors: Fictional stories sometimes feature a fictional movie or play.  In these cases, occasionally, a fictional actor appears.  In movies, it is not infrequent that a real, famous actor plays the role of a fictional person who is also an actor.

Ted Schmidt: Theodore "Ted" Schmidt is a fictional character from the American Showtime television drama series "Queer as Folk", played by Scott Lowell.  Fellow show cast member Peter Paige, who plays Emmett Honeycutt originally auditioned for the role.  Lowell was cast and he stated that he had an instant connection with the character.  "Queer as Folk" is based on the British show of the same name and Ted is loosely based on the character Phil Delaney, played by Jason Merrells.  Phil was killed off in that series, whereas show creator Daniel Lipman decided to develop the character into a full-time role for the US version.

Vishram Sawant: Vishram Shivram Sawant ( विशराम शिवराम सावंत ) is an Indian auteur noted for his realistic portrayal of the criminal underworld.  Heavily influenced by Ram Gopal Varma, he made his directorial debut with "D", which is about the meteroic rise of a fictional underworld don, "Deshu" ( played by Randeep Hooda), which appears to be loosely based upon Dawood Ibrahim's career ( though Sawant denies it).  His next film was Risk in which the same actor plays an errant police inspector with Vinod Khanna as villain.

Stuart Dallas: Stuart Alan Dallas (born 19 April 1991) is a Northern Irish professional footballer who plays as a Winger for Championship club Leeds United and the Northern Ireland national team.

Stuart Alan Jones: Stuart Alan Jones is a fictional character from the Channel 4 drama series "Queer as Folk", portrayed by Aidan Gillen.  Working at an advertising agency in Manchester, Stuart spent a significant portion of his time in pubs or the night club Babylon on Canal Street.  Enthusiastic at sex and once said he wants to "die shagging."  Although he is not a gay activist, Stuart always acts aggressively toward homophobes.

Stuart Brock: Stuart Alan Brock (born 26 September 1976) is an English footballer who made 135 appearances in the Football League playing as a goalkeeper for Kidderminster Harriers.  He currently plays for Hednesford Town in the Northern Premier League .  Brock joined the club in the summer of 2008 from Southern League Willenhall Town, following former manager Dean Edwards to Keys Park.

Supporting paragraphs: Stuart Alan Jones Aidan Gillen
Answer: Aidan Gillen