Iestyn began his career puppeteering animatronic animals made by Jim Henson’s Creature Shop in the West End musical, Doctor Dolittle. He went on to work on The Fimbles (CBeebies) as an assistant puppeteer, was promoted to his own character on spin off series The Roly Mo Show, and has been working mainly in television, film, and commercials ever since.
In 2005 he co-founded Talk to the Hand Puppets. In 2012 they won the Royal Television Society Award for the puppets and puppetry on BBC comedy series, Mongrels.