Barry Purves, director of the Aardman short "Next", also directed "Hamilton Mattress" for Harvest Films. The film, a half-hour special that premiered on Christmas Day 2001, was produced by Chris Moll, producer of the "Wallace and Gromit" short film "The Wrong Trousers". The models were provided by Mackinnon &amp; Saunders, a firm that did the same for "Bob the Builder" and "Corpse Bride".