In total the Cabinet financed 18 devices from 17 challenge participants over the course of the challenge; the majority of which were either completely new designs or modifications of existing designs. Through its technical design process, which eliminated devices based on whether they met regulatory requirements or were needed to meet government’s targets, it identified just 3 participants whose products were required. The remaining 14 designs were not manufactured; of these the Cabinet Office believes that 5 could have gone on to meet the regulatory requirements had they been needed.35