[3] For her performance in the FX series Breeders (2020–), Haggard received a British Academy Television Award nomination.
[6] In 1996, Haggard made her acting debut in an episode of ITV crime drama, The Ruth Rendell Mysteries.
She appeared in the BBC Three sketch show Man Stroke Woman, and in the Channel 4 sitcom Green Wing[7][8] as Emmy.
She also made an appearance in an episode of Peep Show, playing a nurse who examines Mark Corrigan's testicles, and in the BBC Two comedy Psychoville by Reece Shearsmith and Steve Pemberton.
[10] Haggard played Sophie in the Doctor Who episode "The Lodger",[11] a role she reprised in "Closing Time".
[13] In April 2019, Haggard began playing the lead role of Miri Matteson in BBC Three sitcom Back to Life.