Guest Stars Louise Brealey as Cass Penny Downie as Ellen Geoffrey McGivern as Uncle Geoff Olivia Poulet as Alison Jessica Gunning as Jan 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 Laurence Howarth as Martin Coburn Naomi Morris as Janette Carsten Hayes as Taxi Driver Laurence Ubong Williams as Cafe Waiter Rebecca Herod as Woman in Cafe Catriona Knox as Flight Attendant Alberto Maneiro as Basque Passenger
