Smallfilms is a British television production company that made animated TV programmes for children from 1959 until the 1980s. In 2014 the company began operating again, producing a new series of its most famous show, The Clangers, but it became dormant again in 2017, after production of the show was slightly changed. It was originally a partnership between Oliver Postgate and Peter Firmin. Several popular series of short films were made using stop-motion animation, including Clangers, Noggin the Nog and Ivor the Engine. Another Smallfilms production, Bagpuss, came top of a BBC poll to find the favourite British children's programme of the 20th century.

Clangers is a British stop-motion animated children's television series, consisting of short films about a family of mouse-like creatures who live on, and inside, a small moon-like planet. They speak only in a whistled language, and eat green soup and blue string pudding. The programmes were originally broadcast on BBC1 between 1969 and 1972, followed by a special episode which was broadcast in 1974.