- Abi Louise
- Â Jenny Flint / ... 37 episodes, 2021-2024
- Matt Barrett
- Â Strax / ... 29 episodes, 2021-2024
- Alia E. Torrie
- Â Madame Vastra 18 episodes, 2021-2023
- Vanessa McAuley
- Â Madame Vastra 16 episodes, 2023-2024
- Chelsea Lagan
- Â Molly O'Neill / ... 10 episodes, 2022-2024
- Zak Rosenfeld
- Â Inspector / ... 6 episodes, 2022
- Matthew Chambers
- Â Small Piece / ... 4 episodes, 2021-2022
- Chris Walker-Thomson
- Â Mr. Quin 4 episodes, 2023-2024
- James York
- Â Lady Bracknell / ... 4 episodes, 2022-2024
- Cath Meal
- Â Alma / ... 4 episodes, 2022-2024
- James Sutton
- Â Fraser Ward / ... 4 episodes, 2023-2024
- Ben O'Neill
- Â Patrick Cooper / ... 3 episodes, 2022
- Connor Chadwick
- Â Dave / ... 3 episodes, 2023-2024
- Alexander Tighe
- Â Gus / ... 3 episodes, 2022
- Jimi Wolfe
- Â Farmer August / ... 3 episodes, 2023-2024
- Dexter Harris
- Â Adam 2 episodes, 2024
- Lewis Wheelhouse
- Â Professor Winston / ... 2 episodes, 2023-2024
- Fraser Kelly
- Â Inspector McGregor / ... 2 episodes, 2023-2024
- Brandon McCaffrey
- Â Cathal O'Neill / ... 2 episodes, 2022-2024
- S. Joe
- Â Dr. Zammit / ... 2 episodes, 2022
- Aidan O'Connor
- Â Cybermen / ... 2 episodes, 2024
- Connor J. Sumner
- Â Barman / ... 2 episodes, 2024
- Matt Liness
- Â Quin 1 episode, 2024
- Joshua Fleming
- Â The Whispermen 1 episode, 2023
- Dominic Snowdon
- Â Tim 1 episode, 2024
- Ellen Barrett
- Â Maid 1 episode, 2022
- Reuben Roper
- Â Arawn 1 episode, 2024
- Rebecca Hodge
- Â Vella 1 episode, 2024
- Kathryn Haynes
- Â The Thirteenth Doctor 1 episode, 2024
- Emily Jaine
- Â Mrs. Morris 1 episode, 2022
- Asa Holmes
- Â The Whispermen 1 episode, 2023
- Jed T.E. Rhodes
- Â Computer 1 episode, 2024
- Ryan Molyneaux
- Â Handel 1 episode, 2024
- Ian Harris
- Â Mike 1 episode, 2022
- Liam Seabolt
- Â Sam 1 episode, 2022
- David Bingham
- Â The Whispermen 1 episode, 2023
- Catherine Powell
- Â 155 1 episode, 2023
- Daniel Patton
- Â Amdis 1 episode, 2024
- Heather Leigh Cameron
- Â Crank 1 episode, 2024
- Brandon Lagan
- Â Young Charlie O'Neill 1 episode, 2024
- Joshua Coy
- Â Zoo Keeper 1 episode, 2024
- Iris Prindel
- Â Lever 1 episode, 2024
- Edd Miller
- Â Andras 1 episode, 2022
- Star Craib-Leete
- Â The Whispermen 1 episode, 2023
- Josh Murphy
- Â Christian 1 episode, 2022
- Grace Beard
- Â Woman 1 episode, 2022
- Paul Snowball
- Â The Whispermen 1 episode, 2023
- Leo Canteri
- Â Antonio 1 episode, 2022
- Louise Whiddett
- Â Matron 1 episode, 2022
- Heather Leigh Cameron
- Â Crank 1 episode, 2024
