In the early 1960s the clients of the construction industry had only a limited choice of procurement methods which they might wish to use for the construction of a new project. The RIBA form of contract, although even then not used universally, had yet to experience extensive rivalry from elsewhere or even from within its own organisation for a serious alternative. Contract bills were becoming the preferred document in place of the specification, and the mistrusted cost-plus type contracts, which had been a necessity a few years earlier for the rapid repair of war-damaged property, were already in decline.