Stephen Byers, secretary of state for trade and industry, opens the Space4 factory in Castle Bromwich. The Westbury building group's factory uses a new process that builds homes with higher standards of quality, precision and energy efficiency. The process was devised through five years of research in collaboration with the Warwick Manufacturing Group at the University of Warwick. Robin Davies, Westbury's director of Space4, said: 'The work in the factory means that Space4 components require less work on site. We can build a weatherproof and secure structure, including doors, roof and windows, anywhere in the UK within 48 hours'