The Rail Delivery Group (RDG), formerly Association of Train Operating Companies (ATOC), is a body that represents the 23 train operating companies that provide passenger services on the privatised British railway system. It owns the National Rail brand. RDG is an unincorporated association owned by its members. It was set up by the train operators formed during privatisation of the railways under the Railways Act 1993. Its office is in London.
Services provided by the Rail Delivery Group include National Rail Enquiries, sponsorship of thePlusbus schemes, the management of rail discount cards and the licensing of railway travel agents. It also produces the definitive National Routeing Guide, available on its website, defining the validity of tickets, and has some input in the content of the National Fares Manual, which is distributed by the National Rail website.