Samuel West Siegfried Farnon Actor Anna Madeley Mrs Hall Actor Nicholas Ralph James Herriot Actor Callum Woodhouse Tristan Farnon Actor Rachel Shenton Helen Alderson Actor Tony Pitts Richard Alderson Actor Matthew Lewis Hugh Hulton Actor Imogen Clawson Jenny Alderson Actor Patricia Hodge Mrs Pumphrey Actor Drew Cain James Herriot Senior Actor Gabriel Quigley Hannah Herriot Actor Mollie Winnard Maggie Actor Nigel Betts Dennis Handshaw Actor Mark Noble Henry Dinsdale Actor Kriss Dosanjh George Pandhi Actor Paul Hawkyard William Henry Actor Naomi Radcliffe Mrs Dinsdale Actor Dave Hill Bert Chapman Actor Cleo Sylvestre Anne Chapman Actor Jon Furlong Mr Dobson Actor Ben Vanstone Writer, Executive Producer Chloë Mi Lin Ewart Writer Karim Khan Writer Jamie Crichton Writer Brian Percival Director, Executive Producer Andy Hay Director Rebecca Eaton Executive Producer Stewart Svaasand Director Melissa Gallant Executive Producer Louise Pedersen Executive Producer Colin Callender Executive Producer Hugo Heppell Executive Producer Caroline Cooper Charles Executive Producer Sharon Moran Executive Producer Richard Burrell Producer