 Quainton Road remained open , but with the closure of the Brill Tramway it was no longer a significant junction . A connection between the GCR and the former Buckinghamshire Railway at Calvert was opened in 1942 , leaving the A & B route to Verney Junction with no purpose other than as a diversionary route . It was closed to passengers on 6 July 1936 . London Transport passenger services beyond Aylesbury were withdrawn , leaving the former GCR ( part of the London and North Eastern Railway after 1923 ) as the only passenger services to Quainton Road . 
