Todas las criaturas grandes y pequeñas

• 
  Anna Madeley
  Mrs Hall 28 episodes, 2020-2023
• 
  Samuel West
  Siegfried Farnon 28 episodes, 2020-2023
• 
  Rachel Shenton
  Helen Alderson / ... 28 episodes, 2020-2023
• 
  Nicholas Ralph
  James Herriot 27 episodes, 2020-2023
• 
  Callum Woodhouse
  Tristan Farnon 20 episodes, 2020-2022
• 
  Imogen Clawson
  Jenny Alderson 19 episodes, 2020-2023
• 
  Tony Pitts
  Richard Alderson / ... 17 episodes, 2020-2023
• 
  Will Thorp
  Gerald Hammond 13 episodes, 2021-2023
• 
  Derek
  Tricki / ... 11 episodes, 2020-2023
• 
  Mollie Winnard
  Maggie 10 episodes, 2020-2023
• 
  Patricia Hodge
  Mrs Pumphrey / ... 8 episodes, 2021-2023
• 
  Matthew Lewis
  Hugh Hulton 7 episodes, 2020-2021
• 
  Mark Noble
  Henry Dinsdale 6 episodes, 2020-2022
• 
  James Anthony-Rose
  Richard Carmody 5 episodes, 2023
• 
  Gabriel Quigley
  Hannah Herriot 5 episodes, 2020-2022
• 
  Drew Cain
  James Herriot Senior 5 episodes, 2020-2022
• 
  Joseph May
  François 5 episodes, 2021-2023
• 
  Alexis Platt
  Dick Rudd 4 episodes, 2020-2022
• 
  Jon Furlong
  Mr Dobson / ... 4 episodes, 2020-2023
• 
  Lamin Touray
  Tom Chapman 4 episodes, 2021-2022
• 
  Dorothy Atkinson
  Diana Brompton 3 episodes, 2021
• 
  Cleo Sylvestre
  Anne Chapman 3 episodes, 2020-2023
• 
  Kriss Dosanjh
  George Pandhi 3 episodes, 2020-2022
• 
  Maimie McCoy
  Dorothy 3 episodes, 2020
• 
  Nigel Betts
  Dennis Handshaw 3 episodes, 2020-2021
• 
  Sophie Khan Levy
  Florence Pandhi 3 episodes, 2022
• 
  Dora
  Tricki 3 episodes, 2023
• 
  Amy Nuttall
  Phyllis Dalby 2 episodes, 2021
• 
  Aiden Cook
  Young Billy Dalby 2 episodes, 2021
• 
  Diana Rigg
  Mrs Pumphrey 2 episodes, 2020
• 
  Dave Hill
  Bert Chapman 2 episodes, 2020-2021
• 
  Steven Hartley
  John Monkham 2 episodes, 2021-2022
• 
  Mike Harding
  Isaac Cranford 2 episodes, 2021-2022
• 
  Adrian Rawlins
  Charles Harcourt 2 episodes, 2022
• 
  Michael Maloney
  Albert Sebright Saunders 2 episodes, 2022

• Andy Hay
  ...
  (11 episodes, 2020-2023)
• Brian Percival
  ...
  (6 episodes, 2020-2022)
• Stewart Svaasand
  ...
  (5 episodes, 2022-2023)
• Metin Hüseyin
  ...
  (2 episodes, 2020)
• Sasha Ransome
  ...
  (2 episodes, 2021)
• Jordan Hogg
  ...
  (2 episodes, 2023)

• Maxine Alderton
  ...
  (written by) (2 episodes, 2023)
• Lee Coan
  ...
  (story) (1 episode, 2023)
• Jamie Crichton
  ...
  (written by) (4 episodes, 2022-2023)
• Chloë Mi Lin Ewart
  ...
  (written by) (3 episodes, 2021-2022)
• James Herriot
  ...
  (based on the books by) (28 episodes, 2020-2023)
• Lisa Holdsworth
  ...
  (written by) (1 episode, 2020)
• Julian Jones
  ...
  (written by) (1 episode, 2020)
• Karim Khan
  ...
  (written by) (1 episode, 2022)
• Debbie O'Malley
  ...
  (written by) (3 episodes, 2020-2021)
• Helen Raynor
  ...
  (written by) (1 episode, 2023)
• Freddy Syborn
  ...
  (written by) (1 episode, 2020)
• Ben Vanstone
  ...
  (additional material) (1 episode, 2022)

• Andy Hay
• Brian Percival
• Maxine Alderton
• Lee Coan