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 Nafessa Williams Cameron Cook Actor Gonzalo Validiez Mateo Reyes Actor Aidan Turner Declan O'Hara Actor Guy Siner Bishop Brenton Actor Claire Rushbrook Lady Monica Baddingham Actor Brendan Patricks Henry Hampshire Actor Bella Maclean Taggie O'Hara Actor Georgia Mack Sharon Jones Actor Louis Landau Archie Baddingham Actor Gilbert Kyem Jnr Wesley Emerson Actor Rufus Jones Paul Stratton Actor Bryony Hannah Deirdre Kilpatrick Actor Catriona Chandler Caitlin O'Hara Actor Milo Callaghan Seb Burrows Actor Emily Atack Sarah Stratton Actor Wendy Albiston Mrs Makepiece Actor Dominic Treadwell-Collins Executive Producer Alexander Lamb Executive Producer Alexandra Brodski Director Dare Aiyegbayo Writer