 With the MR extension to Aylesbury approved , in March 1883 the Duke announced his own scheme to extend the Tramway to Oxford . The turntable at Quainton Road would be replaced by a junction to the south of the turntable to allow through running of trains . The stretch from Quainton Road to Brill would be straightened and improved to main @-@ line standards , and the little @-@ used stations at Waddesdon Road and Wood Siding would be closed . From Brill , the line would pass in a 1 @,@ 650 @-@ yard ( 1 @,@ 510 m ) tunnel through Muswell Hill to the south of Brill , and on via <unk> before crossing from Buckinghamshire into Oxfordshire at Stanton St. John , calling at Headington on the outskirts of Oxford and terminating at a station to be built in the back garden of 12 High Street , St Clement 's , near Magdalen Bridge . 
