Successive government procurement strategies have repeatedly promised high quality public buildings made possible through Private Finance Initiatives, but is that what's been delivered? What went wrong in Edinburgh where 17 schools remained closed after the Easter break because of fears walls might collapse on children and staff? Allan Urry reveals new concerns about the extent of fire safety problems in some schools and hospitals because contractors failed to ensure they were built to specification. How safe are they, and who's footing the bill to put them right? Producer: Ian Muir Cochrane Reporter: Allan Urry.