On 19 October 2013, BBC Radio 4 broadcast Banks' play Goodbye about a woman diagnosed with breast cancer. The play is an account of the path from first diagnosis to death of Lizzie, played by Olivia Colman); it deals with her relationships with her family and with her best friend Jen, played by Natascha McElhone, and their reactions to Jen's illness and death. The cast included Darren Boyd, John Simm, Alison Steadman, Ezra Banks-Baddiel and the voice of Dolly Banks-Baddiel; it was produced by Heather Larmour. She subsequently wrote the play's 2015 film adaptation, titled Miss You Already.