[2] He started his acting career in the Cambridge Footlights and went on to have roles in The Bill, Casualty, All Creatures Great and Small, Fist of Fun, and other programmes.
[2] Cashmore was a writer and performer for Gimme 5, the live ITV children's programme.
He has written several plays with Andy Powrie, including Trip of A Lifetime, published by Samuel French, which has been performed around the world.
[citation needed] Cashmore wrote the following full-length plays and pantomimes: What's in a name?, Amber, Trip of a Lifetime, Time Please, A Breed Apart, Amy is Four, Unaccommodated, Bride or Groom?, Seating Plan, New Year's Resolution.
[2] In 2017, he was selected as the Green Party candidate for Chelsea and Fulham, where he stood for the parliament in the 2017 general election, finishing fourth with 1.9% of the vote.