Simon Farnaby Julian Creator, Actor, Executive Producer Jim Howick Pat Creator, Actor, Executive Producer Mathew Baynton Thomas Creator, Actor, Executive Producer Ben Willbond Captain Creator, Actor, Executive Producer Laurence Rickard Robin the Caveman , Headless Humphrey's Head Creator, Actor, Writer, Executive Producer Martha Howe-Douglas Fanny Creator, Actor, Writer, Executive Producer Charlotte Ritchie Alison Actor Kiell Smith-Bynoe Mike Actor Lolly Adefope Kitty Actor Katy Wix Mary Actor Cornelius Booth Philip Actor Jackie Clune Gwen Actor Yaamin Chowdhury Rory Actor Colin Hoult Gordon Actor Shivani Thussu Lucy Actor Tom Kingsley Director Matthew Mulot Producer Alison Carpenter Executive Producer Imogen Cooper Executive Producer Debra Hayward Executive Producer Alison Owen Executive Producer