Guest Stars Sian Clifford as Claire Edwards Bill Paterson as Dad Olivia Colman as Godmother Jenny Rainsford as Boo Hugh Skinner as Harry Ben Aldridge as Arsehole Guy Hugh Dennis as Bank Manager Jamie Demetriou as Bus Rodent Jordan Long as Taxi Driver Sarah Daykin as Drunk Girl Sean Richards-Mulzac as Young Man Tree Waller-Bridge as Lecturer