Guest Stars Louise Brealey as Cass Penny Downie as Ellen Jessica Gunning as Jan Geoffrey McGivern as Uncle Geoff Olivia Poulet as Alison Oliver Maltman as Mike John Macmillan as Julian Penny Ryder as Wendy Clive Francis as Phil Emily Lloyd-Saini as Sarah Giles Mercedes Grower as Vet's Receptionist Sevilla Delofski as Cat Owner