Setting up the business in a disused cowshed at Firmin's home in Blean near Canterbury, Kent, Postgate and Firmin made children's animation programmes, based on concepts that mostly originated from Postgate. Firmin did the artwork and built the models, whilst Postgate wrote the scripts, did the stop motion filming, and voiced many of the characters. "Smallfilms" was able to produce two minutes of TV-ready film per day, twelve times as much as a conventional stop motion animation studio, with Postgate moving the (originally cardboard) characters himself, and working his 16mm camera frame-by-frame with a home-made clicker. As Postgate voiced so many of the productions, including the WereBear story tapes, his distinctive voice became familiar to generations of children.