Famous for voicing Lumpy on the Playhouse Disney series My Friends Tigger & Pooh, he is also notable for his role as Fizzy on the English science fiction series The Sparticle Mystery.
Early in his acting career, he appeared on the British children's program The Basil Brush Show.
He was born with the genetic disorder cystic fibrosis.
The son of Alison Dillon and the grandchild of Academy Award-winning visual effects director Nick Allder, he was born in London, England.
He and Peter Cullen both voiced recurring characters on My Friends Tigger & Pooh.