sentences:  According to RMT, the proposals to implement driver-only operations are in response to the 12.5% reduction in Transport for London's funding announced in Chancellor of the Exchequer George Osborne's Comprehensive Spending Review.By 21 July 2010, Sir Roy McNulty, chair of the major value for money inquiry of the rail industry in the United Kingdom, tabled a scoping report titled "Realising the potential of GB rail" commissioned by the Department of Transport (DfT) and the Office of Rail Regulation (ORR).The report recommended that "the default position for all services on the GB rail network should be DOO (driver-only operation), with a second member of train-crew only being provided where there is a commercial, technical or other imperative", in order to reach the overall industry goal of a "30% unit cost reduction" by around 2018.