Addison portrayed Angela in the Zoo Venues production of Abigail's Party at the 2005 Edinburgh Festival.
She played Lydia Languish in The Rivals on tour in the UK between September and November 2010. She started playing Jolene in Chalet Lines at the Bush Theatre in April 2012. She also voiced the companion Sera in Dragon Age: Inquisition. She has played Janice in the seventh and eighth series of Doc Martin which aired in the UK in 2015 and 2017.
Other television performances by Robyn Addison include Lightning Strikes, Inspector George Gently (Series 2 Episode 3 - Gently in the Blood), The Street (Season 2 Episode 6) and Dalziel and Pascoe ("Demons on Our Shoulders" – Season 12 Episode 1&2).
