Mathew Baynton Thomas Creator, Actor, Writer, Executive Producer Simon Farnaby Julian Creator, Actor, Executive Producer Martha Howe-Douglas Fanny Creator, Actor, Executive Producer Jim Howick Pat Creator, Actor, Writer Laurence Rickard Robin , Humphrey's Head Creator, Actor, Executive Producer Ben Willbond Captain Creator, Actor, Executive Producer 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 Imogen Cooper Executive Producer Debra Hayward Executive Producer Alison Owen Executive Producer