Dominic Minghella Creator Mark Crowdy Creator, Executive Producer Craig Ferguson Creator Martin Clunes Dr Martin Ellingham Actor Caroline Catz Louisa Ellingham Actor Ian McNeice Bert Large Actor John Marquez PC Penhale Actor Jessica Ransom Morwenna Newcross Actor Joe Absolom Al Large Actor Selina Cadell Mrs Tishell Actor Eileen Atkins Ruth Ellingham Actor Conleth Hill Dr Edward Mullen Actor Caroline Quentin Angela Sim Actor Angela Curran Caitlin Morgan Guest Star Buffy Davis Pippa Woodley Guest Star Robyn Addison Janice Bone Actor John Hollingworth Prof. Sam Bradman Guest Star Rosie Ede Mel Hendy Guest Star Olivia Poulet Julia Pote Actor Milly Toomey Bethany Degan Actor Miguel Brooking Lifeguard Guest Star Elliott Blake James Henry Guest Star Melanie Downs Postwoman Steph Guest Star Nigel Cole Director, Executive Producer Ben Bolt Director Philippa Braithwaite Producer Alastair Galbrath Writer Charles Palmer Director Jack Lothian Writer Chris Reddy Writer Colin Towns Original Music Andrew Rattenbury Writer Julian Unthank Writer