David Tennant Tony Baddingham Actor Oliver Chris James Vereker Actor Katherine Parkinson Lizzie Vereker Actor Alex Hassell Rupert Campbell-Black Actor Victoria Smurfit Maud O'Hara Actor Luke Pasqualino Basil `Bas' Baddingham Actor Danny Dyer Freddie Jones Actor Lisa McGrillis Valerie Jones Actor Wendy Albiston Mrs Makepiece Actor Emily Atack Sarah Stratton Actor Ryan Lennon Baker Wayne Jones Actor Milo Callaghan Seb Burrows Actor Catriona Chandler Caitlin O'Hara Actor Nafessa Williams Cameron Cook Actor Aidan Turner Declan O'Hara Actor Claire Rushbrook Lady Monica Baddingham Actor Lara Peake Daysee Butler Actor Alan Mehdizadeh Gary Actor Bella Maclean Taggie O'Hara Actor Georgia Mack Sharon Jones Actor Louis Landau Archie Baddingham Actor Rufus Jones Rufus Jones Actor Bryony Hannah Deirdre Kilpatrick Actor Kate Cresswell Georgina Harrison Actor Dominic Treadwell-Collins Executive Producer Alexander Lamb Executive Producer Elliot Hegarty Director Sophie Goodhart Writer