Guest Stars Fiona Dolman as Sarah Barnaby Annette Badland as Dr. Fleur Perkins Isabel Shaw as Betty Barnaby Peter Serafinowicz as Lucian Shirewell Ginny Holder as Lila Blundell Sarah Woodward as Ursula Shirewell Agni Scott as Davina Shirewell Alex Macqueen as Francis Shirewell Charles Dale as Gideon Blundell Patrick Pearson as Justin Inkerman Verity Marshall as Jordana Linsbury Jade Harrison as Sadie Rowcroft Joshua Griffin as Caleb Blundell Miya James as Sorrel Watkins
