Brian Sinclair (veterinary surgeon) Ministry of Agriculture's Sterility Advisory unit, rising to become head of the Veterinary Investigation Centre in Leeds. He was the model for the character 'Tristan Farnon' in Wight's semi-autobiographical novels, which were later adapted to the big screen in two films, and television under the name "All Creatures Great and Small". The fictional Tristan was portrayed as a charming rogue who was still studying veterinary medicine in the early books, constantly having to re-take examinations because of his lack of application, often to be found in the pub, and subject to tirades from his bombastic elder brother Siegfried. Unlike his
All Creatures Great and Small (TV series) different actors in their various stints. Jimmy is portrayed by Harry Brayne in the 1983 special. Oliver Wilson takes over the role from the 1985 special until the end of series 5. Paul Lyon plays him in the final series. Rosie, meanwhile, is played by Rebecca Smith from the 1985 special until the end of series 5. Alison Lewis takes over for the final series. James' early rival for Helen's affections, the well-off Richard Edmundson, was played by Norman Mann. Several farmers make recurring appearances throughout the series. Mr Biggins (John Sharp) is a notorious payment-dodger who regularly attempts to