London – High Wycombe – Oxford / Birmingham
No Timetable Changes
A normal Sunday timetable will operate, with no planned alterations.
London – Amersham – Aylesbury Vale Parkway
Timetable Changes – Engineering Works
Until Approximately 12:00: Due to London Underground engineering works, a reduced service of one train per hour will operate between Aylesbury Vale Parkway and stations to Amersham. Connecting buses will operate between Amersham and Beaconsfield, for connecting trains to/from Marylebone.
From Approximately 12:00: A normal Sunday timetable will operate between Marylebone and stations to Aylesbury Vale Parkway.
Please refer to the attached timetable for full details.