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 Alex Macqueen as Francis Shirewell Sarah Woodward as Ursula Shirewell Agni Scott as Davina Shirewell Jade Harrison as Sadie Rowcroft Charles Dale as Gideon Blundell Verity Marshall as Jordana Linsbury Patrick Pearson as Justin Inkerman Joshua Griffin as Caleb Blundell Miya James as Sorrel Watkins
