- Angus Wright - Sir Giles Linley
- Muzz Khan - The Man With The Blue Hat
- Julie Dray - Claudette, French Lady
- George Potts - Vicar
- Leigh Quinn - Bearded Lady
- Daniel Tuite - Mr Milsom
- Philip Bird - Mr Fisher
- Rebecca Benson - Harriet Fisher
- Amy Booth-Steel - Maud
- Femi Elufowoju Jr. - Mr Goole
- Beatie Edney - Mrs McHenry
- Matthew Holness - Hector, Crown Prince of Bulgaria
- John Locke - Neil Fromage
- Craig Parkinson - Patrick Levant
- Sally Phillips - Princess Juliana of Bulgaria
- Jill Halfpenny - Flora Wilson
- Jemaine Clement - Queen's Emissary
- Amar Chadha-Patel - Sgt Keith Carnival
- Amar Chadha-Patel - Sergeant Keith Carnival
- Peter-Hugo Daly - Murky John
- Morgan Watkins - Ernie
- David Webber - Newspaper Vendor
- Alistair Petrie - Mr Larkham
- Nadia Albina - Tess
- Carla Harrison-Hodge - Ginny
- Sally Sanders - Baby
- Taika Waititi - Musician
- Amy Bowden - Hettie
- Peter Harding - Assistant Commissioner
- Ashna Rabheru - Tilly
- Anya McKenna-Bruce - Urchin Girl
- Andy Riley
- Ben Taylor
- Kevin Cecil
- Ben Farrell
- Toby Stevens
- Matt Berry
Freddie Fox interpreta a Detective Sergeant Wilbur Strauss en la serie.
Susan Wokoma interpreta a Mabel Wisbech en la serie.
Alun Armstrong hace el papel de Chief Inspector Hugh Wisbech.
Paul Kaye interpreta a Detective Inspector Tanner en la serie.
Ann Mitchell interpreta a Gwen en la serie.
Keeley Hawes interpreta a Lydia en la serie.
Capítulo disponible en las siguientes plataformas:
