The Marston Vale line (Network Rail route MD 140) is the line between and in England, a surviving remnant of the former Varsity line between and , most of which was closed in the late 1960s. The line is sponsored by the Marston Vale community rail partnership. The line is to be adopted and upgraded as part of East West Rail, a project underway to re-establish the OxfordCambridge route. History The line was opened in 1846 by the London and Birmingham Railway, though the L&B merged with the Grand Junction Railway to become the London and North Western Railway whilst construction was ongoing – the LNWR ran it from its opening. The line later became part of the cross-country Varsity line from to (opened in stages between 1854 and 1862). Much of the line was built on land owned by the 7th Duke of Bedford, who supported the line but insisted that any station on his estate (Fenny Stratford, Woburn Sands, Ridgmont and Millbrook) be constructed in half-timbered style. The line was threatened in the late 1950s and again in 1964 – though the Bletchley to Oxford and Bedford to Cambridge sections succumbed in December 1967, the Bletchley to Bedford section survived. In 1977 the Parliamentary Select Committee on Nationalised Industries recommended that electrification of more of Britain's rail network be considered. By 1979 British Rail presented a range of options to do so by 2000, some of which included the Marston Vale line. The proposal was not implemented. Silverlink operated the line from privatisation in 1996 until 2007. Services were initially in the hands of a mixture of heritage slam-door diesel multiple units formed of 2-car Class 117 and single-car Class 121 units until replacement with Class 150/1 trains inherited from Central Trains. London Midland took over in 2007 until 9/12/2017. They used a mixture of Class 150/1 and Class 153 multiple units, inherited from Silverlink. On 10 December 2017, West Midlands Trains took over the franchise, staff and rolling stock, operating as London Northwestern Railway. Operation The line is part of the Network Rail Strategic Route 18, SRS 18.12 and is classified as a rural line. Passenger services are operated by West Midlands Trains, using two-car class 230 units. An hourly service operates in each direction Monday–Saturday. It is one of a number of British Railways that is covered by a Community Rail Partnership, in this case known