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) Davison, who plays Siegfried's boyish younger brother, Tristan (affectionately called "Mister Tristan" by housekeeper Edna Hall), whose character was based on Brian Sinclair. "One afternoon, my agent rang to ask how I felt about doing a small part at Birmingham repertory theatre, where Peter Farago, whom I'd worked with in Edinburgh, had taken over as artistic director," recalled Davison. "I asked how long it ran for, which was only a few weeks. This was a difficult one. I wasn't doing anything else but a few lines in Birmingham didn't sound particularly appetising. 'What do you think?' I asked. 'Well, it's