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, Executive Producer Laurence Rickard Robin , Humphrey's Head Creator, Actor, Executive Producer Ben Willbond Captain Creator, Actor Charlotte Ritchie Alison Actor Kiell Smith-Bynoe Mike Actor Lolly Adefope Kitty Actor Katy Wix Mary Actor Ania Marson Lady Button Actor Nick Collett Director Matthew Mulot Producer Alison Carpenter Executive Producer Debra Hayward Executive Producer Alison Owen Executive Producer