The present system has just one function, that is to restrict entrance to the industry. This is counter competitive and counter meritocracy. Please let me build you schools for less than you pay now.
Building sites have a number of subcontractors on them each of which has to produce a huge ammount of method statements. The cost of these is over £50,000 for each contractor. They sit on shelves in files, about 8 feet of shelf space. Nobody has ever read any of these documents.
Save lots on the government's construction budget and just scrap the whole lot of them.