(Standing L-R) Bessie Carter as Nancy Mitford, Joanna Vanderham as Diana Mitford, Toby Regbo as Tom Mitford, James Purefoy as Farve, Anna Chancellor as Muv, Shannon Watson as Unity Mitford (Seated L-R) Zoe Brough as Jessica Mitford, Isobel Jesper Jones as Pam Mitford and Orla Hill as Debo Mitford