Wilfort is also known as co-writer for the film Lemmings (2001) with Daniel Roberts. The film parallels the duo's lives approaching their twenties when growing up together in Porthcawl, a small coastal resort in South Wales.
In 2008, he appeared in various television commercials, including adverts for Crunchy Nut Cereal, the London recycling campaign and the Barclaycard advert where he descends an enormous water slide from his city office, all the way through the city and back to his home.
He also had a recurring role as Jason West in the BAFTA award-winning TV show Gavin & Stacey. He played Ricky Bones in The Lone Ranger (2013).
From 2015 onwards, Wilfort is the voice of Samson (UK/US) in the CGI series of Thomas & Friends. Also in 2015 he appeared as George Cavendish in the BBC's adaptation of Hilary Mantel's novel Wolf Hall. In 2015 and 2016, Wilfort played Bob Cratchit in the BBC drama Dickensian.
