Yn ogystal â'r materion hyn yng nghyswllt datganoli, mae’r rhan fwyaf o gerbydau Prydain yn nwylo’r tri chwmni gweithredu cerbydau sy’n eiddo preifat. Mae’r rhain yn blaenoriaethu eu buddiannau masnachol eu hunain ac nid ydynt yn ymateb i anghenion lleol neu gysylltiedig â gwasanaethau.
As well as these devolution issues, the majority of Britain’s rolling stock remains in the hands of three privately owned rolling stock operating companies which give priority to their own commercial interests and are unresponsive to local or service-related needs.