Samuel West Siegfried Farnon Actor Anna Madeley Mrs Audrey Hall Actor Nicholas Ralph James Herriot Actor Rachel Shenton Helen Herriot Actor Callum Woodhouse Tristan Farnon Actor Patricia Hodge Mrs Pumphrey Actor Thomas Riches Jimmy Herriot Actor Isabella Ward Rosie Herriot Actor Mollie Winnard Maggie Actor Gaia Wise Charlotte Beauvoir Actor Susan Hilton Mrs Stokes Actor Maimie McCoy Dorothy Actor Ralph Falkingham Bobby Ainsley Actor Libby Falkingham Lucy Ainsley Actor Andy Hay Director Colin Callender Executive Producer Melissa Gallant Executive Producer Sharon Moran Executive Producer Alexis Hood Executive Producer Neil Jones Writer Damian Wayling Writer