Rail passengers are being warned of cancellations between London Marylebone and Oxford.
Chiltern Railways said fewer trains will be running between London Marylebone and Oxford due to planned maintenance works that began on Monday.
The “short-notice timetable change” means eight trains between London and Oxford have been cancelled, with passengers getting on or off at Gerrards Cross, Beaconsfield, High Wycombe, Saunderton, Princes Risborough, Bicester Village and Oxford Parkway also affected.