Fans of Channel 5’s All Creatures Great and Small will be acquainted with loveable brother Tristan farnon who is set to return to the hit show after being absent in series 4. He left a big gap in the show and it sure to be an emotional return – especially for brother Seigfried. Played by Callum Woodhouse, who brings out the dynamic and endearing personalities that make him such an enduring character. His charm, comic flair and warmth bring a real depth to the character, which has transformed from bumbling brother to an asset to Darrowby.
Always there to add a bit of humour to the series to the All Creatures Great and Small series – a semi-autobiographical series of books by James Herriot aka Alf Wight – Tristan is a great character that is very much a fan favourite. He’s been away with the RAVC, the Royal Army Veterinary Corps. Stationed in Egypt, looking after the animals over there, he’s set to arrive back to series five.
The synopsis for episode three which airs on Channel 5 tonight at 9pm says that Siegfried receives an unexpected telegram from Tristan, announcing his return home, which fills him with relief but leaves many unanswered questions. Determined to keep a promise to himself, Siegfried eagerly awaits his brother’s arrival.
Their reunion is heartwarming, and Siegfried is grateful to have Tristan back. Meanwhile, James is enlisted to help Mrs. Hanley’s overly attached poodle, and Helen and Hannah bond while solving the dog’s peculiar behaviour. However, Siegfried’s resolve is quickly tested when Tristan unknowingly disrupts the day, dragging everyone to the Drovers to recount his Cairo escapades. Tensions rise further when Siegfried confronts Farmer Biggins over a sick goat, losing his temper with more than just the farmer.
The character is based on Alf Wight’s real-life friend, Brian Sinclair, but the series and books take creative liberties, making Tristan a more exaggerated version for comedic effect. Asked about what he loves about the role Callum Wodhouse said: “Just his optimism, his humour. It’s really fun to get to play Tristan, because he’s as anarchic as you can get in the 1930s and 40s, I think. He makes jokes when he probably shouldn’t make jokes, but inevitably, because of his cheeky grin and his attitude, he always gets away with those jokes. So, it’s really nice to play someone like that.”
So, why is Tristan Farnan such a good character?

Tristan’s main role in All Creatures Great and Small is often to provide comic relief, though his storylines delve deeper into his coming of age, his relationship with his older brother Siegfried, and his evolution as a veterinary professional. He is portrayed as someone who has a natural talent for veterinary work but lacks the drive and focus to excel without a push from others. This lack of discipline is a constant source of friction between Tristan and Siegfried, who is much more serious and responsible.
Much of the charm in All Creatures Great and Small comes from the contrast between the two Farnon brothers. Siegfried is the dedicated, slightly eccentric senior veterinarian who runs the practice, while Tristan is the younger, less mature sibling who enjoys life’s pleasures. This dynamic provides ample opportunities for conflict, reconciliation, and comedic mishaps. Siegfried often scolds Tristan for his lack of ambition and discipline, while Tristan, in turn, tries to lighten Siegfried’s stern demeanour.
In the context of James Herriot’s life, Tristan Farnon serves as a foil to the protagonist’s more earnest and serious character. Herriot, played by Nicholas Ralph in the 2020 series revival, is the newly graduated veterinarian who comes to work for the Farnon brothers. Tristan’s easy-going and humorous nature contrasts with Herriot’s initial nervousness and desire to prove himself, offering a sense of levity in an otherwise demanding and often unpredictable job.
As the series progresses, one of the most rewarding aspects of Tristan’s character is his slow but steady development. While he starts off as a playful, immature character who seems more interested in having fun than in his veterinary career, Tristan matures throughout the series. His growth is subtle but noticeable — he begins to take his work more seriously, shows more initiative, and earns the respect of his brother and Herriot.
This character arc makes Tristan, played by Callum Wodhouse, a figure of redemption and personal growth. He’s a reminder that even the most carefree and seemingly directionless individuals have the capacity for change when given the right opportunities and support. Tristan’s journey resonates with audiences because it reflects a common struggle to find purpose and balance between personal freedom and responsibility.
Read More: Channel 5’s ‘All Creatures’ Emotional Return Last Night as Herriot Says His Farewell
Feature Image Credit: Channel 5
