Mathew John Baynton is an English actor, comedian, musician and writer. He is a member of the Them There collective, in which he wrote and starred in Horrible Histories, Yonderland and Ghosts. He was also the co-creator, writer and star of the comedy-drama The Wrong Mans. Other television roles include Elliot Ward in A Good Girl's Guide to Murder, Deano in Gavin & Stacey, Chris Pitt-Goddard in Spy, Simon in Peep Show, William Agar in Quacks, and twin brothers Jamie Winton and Ariel Conroy in You, Me and the Apocalypse. He has appeared in several films, including Bill (2015) and Wonka (2023).