From Brill, the line would pass in a 1650 yards tunnel through Muswell Hill to the south of Brill, and on via Boarstall 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.