Nicola Walker (born 15 May 1970 in Stepney, London) is an English actress. She's best known for her roles as Ruth Evershed in Spooks, Gillian Greenwood in Last Tango in Halifax, DCI Cassie Stuart in Unforgotten and Liv Chenka in Big Finish Doctor Who.
Roles and works she has starred in include:
- Film
- Four Weddings and a Funeral (1994) as Frightful Folk Singer (her first film acting role)
- TV
- Spooks (2003-2011) as Ruth Evershed
- Torn (2007) as Joanna Taylor
- Luther (2010) as Linda Shand (series 1, episode 4)
- Last Tango in Halifax (2012-2020) as Gillian Greenwood
- Scott & Bailey (2013) as Helen Bartlett (series 3)
- Unforgotten (2015-2021) as Cassie Stuart
- River (2015) as Jackie 'Stevie' Stevenson
- Inside No. 9 (2018) as Harriet in (episode: To Have and To Hold)
- Collateral (2018) as Jane Oliver
- Annika (2021-present) as DI Annika Strandhed
- Stage
- The Curious Incident of the Dog in the Night-time (2012) as Judy (a role she won the Best Actress Olivier for in 2013)
- A View from the Bridge (2014-2016) as Beatrice (Young Vic production in 2014, which transferred to Broadway the following year)
- Audio
- Big Finish Doctor Who (2011-present) as Liv Chenka, one of the Eighth Doctor's companions
- Annika Stranded (2013-present) as Annika Strandhed
- Fugue State (2015) as Dr. Fallon
- Mythos (2018) as Mary Lairre
- The Lovecraft Investigations (2018-2020) as Dr. Eleanor Peck
