Guest Stars Fiona Dolman as Sarah Barnaby Tamzin Malleson as Dr. Kate Wilding Mark Heap as Simon Fergus-Johnson Elizabeth Berrington as Liberty "Libs" Pearce James Murray as Ollie Tabori Emily Joyce as Valerie Fergus-Johnson Hannah Tointon as Pippa Fergus-Johnson Nikesh Patel as Dev Kardek Perdita Avery as Felicity Hearn Jonah Russell as Conor Bridgeman Nadia Cameron-Blakey as Tabby Fergus-Johnson Les Dennis as Brendan Pearce Paul Blair as Ross Clymer Susie Trayling as Mel Bridgeman
