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 Vanessa Redgrave Mature Jenny (voice) Guest Star Laura Main Sister Bernadette Guest Star Cliff Parisi Fred Guest Star Miranda Hart Chummy Browne Guest Star Ben Caplan PC Peter Noakes Guest Star Valerie King Neighbour Guest Star Roy Hudd Joe Collett Guest Star Sophie Cosson Ingrid Mason Guest Star Tessa Churchard Winnie Lawson Guest Star John Ashton Ted Lawson Guest Star Philippa Lowthorpe Director Jack Williams Writer