Russel sang the title songs to Red Dwarf in 1988 and Office Gossip in 2001.
In the science fiction series Doctor Who Russell embodied in two episodes of a Head of Department. At the Tony Awards in 2008, she received a nomination for " Best Actress in a Musical " for the musical Sunday in the Park with George. She appeared in the New York City located in Studio 54. From September 2005 Russel embodied the character Sergeant Sarah Brown in the musical Guys and Dolls, in which Ewan McGregor participated. In November 2006, Russell appeared in the play Amy 's View by David Hare at the Garrick Theatre in London.
In 2011, she played on in the musical Into the Woods.
Russel is in a relationship with actor Raymond Coulthard.