- Jim Broadbent Kempton Bunton
- Helen Mirren Dorothy Bunton
- Matthew Goode Jeremy Hutchinson
- Anna Maxwell Martin Ms. Gowling
- Fionn Whitehead Jackie
- John Heffernan Neddie Cussen
- Richard McCabe Rab Butler
- Charles Edwards Sir Joseph Simpson
- Andrew Havill Sir Philip Hendy
- Sian Clifford Dr Unsworth
