Cush can currently be seen opposite Peter Capaldi in her Apple TV series Criminal Record in which she stars and Executive Produces. Cush has just played Lady Macbeth opposite David Tennant at the Donmar Warehouse. She is well known for starring in US series The Good Fight, and can be seen as the lead in Britbox drama The Beast Must Die, and Netflix series Stay Close. Cush is the author of Josephine and I and has received an OBE for her contribution to Drama. In 2022, she received an Olivier award nomination for Hamlet at The Young Vic Theatre.