Chiltern Railways passengers are being warned of major disruption later this week.
Trains will be suspended between London Marylebone and Aylesbury Vale Parkway via Amersham from Thursday February 19 until Sunday February 22.
The closure is to allow signalling upgrade works on the Metropolitan Line. Replacement buses will operate across the affected route, although longer journey times are expected due to roadworks.
Customers travelling between Aylesbury and London are advised to travel via Princes Risborough where possible and to check before travelling.

Bucks Local Plan: Aylesbury MP raises concerns
Bucks Council launches final consultation on draft Local Plan
Aylesbury coach begins Commonwealth Games journey with Team England
Small Fire Temporarily Closes Aylesbury Recycling Centre
Spend a night under the stars at Waddesdon Manor to help tackle homelessness in Buckinghamshire
Police carry out co-ordinated searches targeting organised crime across Bucks
Newly installed raised table in Amersham to be replaced













