Nicholas Ralph James Herriot Actor Samuel West Siegfried Farnon Actor Anna Madeley Mrs Hall Actor Callum Woodhouse Tristan Farnon Actor Rachel Shenton Helen Alderson Actor Matthew Lewis Hugh Hulton Actor Tony Pitts Richard Alderson Actor Mollie Winnard Maggie Actor Drew Cain James Herriot Senior Actor Gabriel Quigley Hannah Herriot Actor Nigel Betts Dennis Handshaw Actor Mark Noble Henry Dinsdale Actor Kriss Dosanjh George Pandhi Actor Naomi Radcliffe Mrs Dinsdale Actor Dave Hill Bert Chapman Actor Cleo Sylvestre Anne Chapman Actor Imogen Clawson Jenny Alderson Actor Jon Furlong Mr Dobson Actor Chloë Mi Lin Ewart Writer Sasha Ransome Director James Dean Producer