Guest Stars Louise Brealey as Cass Jessica Gunning as Jan Penny Downie as Ellen Olivia Poulet as Alison Geoffrey McGivern as Uncle Geoff Oliver Maltman as Mike Caius Luckyn-Malone as Young Andrew Sebastian Patterson as Young Stephen Matthew Holness as Laurie Michael Wildman as Tom Emily Lloyd-Saini as Sarah Giles Tony Gardner as Nick Molloy Naomi Morris as Janette Catriona Knox as Flight Attendant Laurence Howarth as Martin Coburn Alberto Maneiro as Basque Passenger Carsten Hayes as Taxi Driver Laurence Ubong Williams as Cafe Waiter Rebecca Herod as Woman in Cafe
