Guest Stars Fiona Dolman as Sarah Barnaby Tamzin Malleson as Dr. Kate Wilding Jamie Blackley as Duncan Hendred Hannah Arterton as Katy Rosalind Knight as Mother Jerome Joanna David as Mother Julian Martha Mackintosh as Tamsin Bickford Cliff Parisi as Barry Josh Parris as Callum Jessica Turner as Delia Norrington Susan Sheridan as Mother Thomas Fiona Glascott as Sister Catherine George Irving as Matthew Hendred Emma Davies as Lauren Hendred Philip Anthony as Peter De Winter Zoë Lister as Young Mother Julian Tom Knight as Colin Fleming Michael Colgan as Father Behan Richard Walsh as George Norrington Louise Bangay as Serena Fleming Hugh Ross as Bishop Graves
