On Acting. Shirley: It's dressing up and playing around and being daft.
Has worked with Rufus Sewell on two BBC dramas.
Shirley is the oldest actor to play a student in the Harry Potter films. She was 35 when she made her first appearance as Moaning Myrtle.
Starred in 2005 movie Frozen.
She claims to have seen a ghost standing at the bottom of her bed when she was in Russia.
She played the lead role of Katherine in a BBC updating of Shakespeare's Taming of the Shrew as part of their Shakespeare Retold mini series.
Shirley has worked with famous actor Robert Carlyle on two occasions; in the television series Hamish Macbeth and in the movie Trainspotting.
She worked on stage as a member of England's National Theatre Company.
In 2003 for her work in 24 Hour Party People, Shirley was nominated for the British Supporting Actress of the Year award by the London Film Critics Circle.
Shirley studied at the Guildhall School of Music and Drama in London.
Shirley makes an appearance in 1996 movie Trainspotting.