Sunday 15th December 2019:
Due to Network Rail engineering works between Princes Risborough and Aylesbury, this section of line is closed all day. An amended timetable will operate between Marylebone and stations to Princes Risborough. Rail replacement buses will operate as follows (in both directions):
Additionally, London-bound trains from Aylesbury Vale Parkway and Aylesbury (via Amersham) will depart from origin and intermediate stations up to 3 minutes earlier than the published timetable. This is in accordance with London Underground's extended leaf fall timetable period.
For full details, please refer to the PDF timetable/s published below: