- Lesley Manville Ada Harris
- Isabelle Huppert Claudine Colbert
- Ellen Thomas Vi Butterfield
- Jason Isaacs Archie
- Lucas Bravo André Fauvel
- Alba Baptista Natasha
- Lambert Wilson Marqués de Chassagne
- Rose Williams Pamela Penrose
- Anna Chancellor Lady Dant
- Christian McKay Giles Newcombe
- Freddie Fox RAF Officer