Claire Cox (born December 19, 1975, Peterborough) is an English film, television and theatre actor. She was nominated for the Ian Charleson Awards in 2001 for her appearance Julius Caesar at the RSC. She appeared in 2010 as Margaret Thatcher in the play Handbagged, shown at the Tricycle Theatre in London as part of its Women, Power and Politics festival. She has appeared in films including Luther (2003) and Between Us (2004), as well as on television in The Bill (2006) and Spooks (2007). She is married to actor Tom Vaughan-Lawlor.