Mathew Baynton Thomas Creator, Actor, Executive Producer Simon Farnaby Julian Creator, Actor, Executive Producer Martha Howe-Douglas Fanny Creator, Actor, Executive Producer Jim Howick Pat Creator, Actor Laurence Rickard Robin , Humphrey's Head Creator, Actor, Writer Ben Willbond Captain Creator, Actor, Writer Charlotte Ritchie Alison Actor Kiell Smith-Bynoe Mike Actor Lolly Adefope Kitty Actor Katy Wix Mary Actor Nick Collett Director Matthew Mulot Producer Alison Carpenter Executive Producer Debra Hayward Executive Producer