Susan was doing plays in Gaelic before she was offered a place at the Central School of Speech and Drama and while there she won the Kenneth Branagh Renaissance Award for Most Promising Student, Her theatre roles include El Cid and Pericles at the National and the title role of Miss Julie at the Young Vic and Ashes and Sand at the Royal Court, She made her tv debut in an episode of Cracker which was followed with parts in Ivanhoe, A Royal Scandal and Truth or Dare About 1997 she completed the film The Secret of Roan Inish a mini series which was filmed in Donegal and had a small part in Interview With the Vampire then came Downtime in which she did her own stunts ,After that she filmed Kings in Grass Castles, a mini series which she filmed in Australia for the BBIC