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 Rebecca Herod as Woman in Cafe Naomi Morris as Janette Alberto Maneiro as Basque Passenger Laurence Ubong Williams as Cafe Waiter Carsten Hayes as Taxi Driver Catriona Knox as Flight Attendant
