Sean Campbell Gallagher (born 2 September 1965) is a British actor, trained at the Poor School in London. From 1992 he has appeared in many theatre productions, television series and films.
Gallagher was born in Luton, Bedfordshire, to Desmond and Margaret Gallagher. He worked at Stanley's Casino in Luton as a croupier in order to assist with drama school tuition.
Gallagher appeared in EastEnders from 1992-1993 playing a playboy called Clive who had an affair with then-married Sam Mitchell.
In 2006 he played the part of Chip in the second new series of Doctor Who opposite David Tennant in the episode "New Earth". In late summer 2006 Gallagher signed up to Coronation Street to play the part of Paul Connor, one of two brothers buying a share in Underworld, the local knicker factory. In early 2007, Gallagher resigned from the Manchester-based ITV programme to pursue other roles, eventually leaving Coronation Street in June 2007.
On 2 July 2007, it was announced that Gallagher had been cast for the lead role of Mal Faith in a new ITV drama series, Rock Rivals, produced by Shed Productions. He starred alongside former EastEnders actress Michelle Collins who played his wife, Karina Faith.
He appeared in a production of Mary Stuart for the Traverse Theatre, Edinburgh, with David Oakes and Penny Layden.
He performed in The Black Album at the Cottesloe Theatre/National Theatre in London, South Bank, in 2009 and then started a national UK tour with the cast throughout the UK in October/November 2009.
He also voiced one of the characters in The Happy Prince, a stop-animation film, produced by Skatedog Films Ltd and directed by John Horabin in 2009. This newly released adaptation of the classic Oscar Wilde short story was featured at the BFI in London in autumn 2009.
He also appeared in the ITV dramas Eternal Law and Leaving and BBC drama Our Girl.
Gallagher is known to support animal welfare societies. In August 2008, Gallagher appeared as a celebrity contestant on an episode of Who Wants to Be a Millionaire, raising funds for World Animal Protection project to end bear dancing in India, "an issue that he feels strongly about."