 The BBC's programmes, initially scheduled for autumn 1981, were moved back to spring 1982.After Curry and Sinclair found out about the BBC's plans, The BBC allowed other manufacturers to submit their proposals.Hauser quickly drafted in Steve Furber (who had been working for Acorn on a voluntary basis since the ACE fruit machine project) and Sophie Wilson to help complete a revised version of the Proton which met the BBC's specifications.