In 1997, Stagecoach was ordered by the Office of Fair Trading to divest of its operations in Milton Keynes and Huntingdon.

This followed an investigation in 1996 into its acquisition of Cambus Holdings which was deemed to have led to an unacceptable monopoly of bus operations in Cambridgeshire, Corby, East Northamptonshire, Kettering, Wellingborough, Bedford and Mid Bedfordshire.

[2] The assets of Milton Keynes Citybus[3] were purchased on 2 May 1997 by bus entrepreneur Julian Peddle, using a new company Premier Buses Limited[4] both to operate in Huntingdon (under the Premier Buses brand name) and also as a holding company with which to purchase MK Metro.

These routes cover areas in more detail, for example serving through the grid squares, while key services mostly ran on the main roads.

These routes were operated by MK Metro after its take-over by Arriva, but before the rebranding and new timetable launch on 24 April 2010.