The London and Birmingham Railway opened in stages, through Cheddington on 9 April 1838, and throughout on 17 September 1838. It formed, with the
Grand Junction Railway, the backbone of early railways in Great Britain. As the London and Birmingham line was being built, business interests in Aylesbury were already thinking of how a railway connection might be made between their town and the new railway. In 1815 the town had ensured its connection to the canal network for the transport to market of its agricultural produce, and now wished to do the same with a railway. In these early times, goods traffic was the dominant commercial force. Serious discussions took place over the construction of a branch line and a scheme went to the 1836 session of Parliament. The (
6 & 7 Will. 4. c. xxxvii) obtained royal assent on 19 May 1836, without opposition in Parliament. All seemed to be going well, until a local bank, William Medley, Son and Company, of Aylesbury, failed in January 1837. The bank had been strong supporters of the line, and many local businesspeople were embarrassed, causing a local financial panic, and the loss of promised subscriptions to the railway. After urgent reflection, the Aylesbury Railway Company decided to proceed with its branch line, but any ideas it may have harboured regarding an extension on to
Oxford, were now dismissed. ==Construction and opening==