Jessica Raine Jenny Lee Actor Jenny Agutter Sister Julienne Actor Pam Ferris Sister Evangelina Actor Judy Parfitt Sister Monica Joan Actor Helen George Trixie Franklin Actor Bryony Hannah Cynthia Miller Actor Miranda Hart Chummy Browne Actor Vanessa Redgrave Mature Jenny (voice) Guest Star Cliff Parisi Fred Guest Star Laura Main Sister Bernadette Guest Star Dorothy Atkinson Jane Sutton Guest Star Leanne Rowe Ruby Roberts Guest Star Sharon Small Nora Harding Guest Star Mark Flitton Bill Harding Guest Star Jake Bailey Jack Smith Guest Star Lucy Russell Mrs. Clarke Guest Star Alison Newman Mrs. Pritchard Guest Star China Moo-Young Director Heidi Thomas Writer