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 Ben Caplan PC Peter Noakes Guest Star Laura Main Sister Bernadette Guest Star Jenny Bolt Sheila Cooke Guest Star Kirsty J. Curtis Irene Kelly Guest Star Eoin Geoghegan Pat Kelly Guest Star Aaron Harris Conor Kelly Guest Star Cliff Parisi Fred Guest Star Roger Goldby Director Harriet Warner Writer