Jeannette Spark is known for portraying Linda Wallander in the British television series Wallander on BBC1. In 2010 she acted the part of a homeless girl the third episode of Sherlock, The Great Game. In 2011 she portrayed Joan Malin in the television drama film Hattie.
In 2013, she took the role of the headmistress, Emma, in Man Down, the Channel 4 comedy series. She plays the role of Detective Inspector Kate Gemmill in the 2015 BBC drama The Interceptor