A broken rail has caused train delays and cancellations in and out of London this morning. 

No Chiltern Railways trains can arrive or depart from London Marylebone due to a broken piece of track just outside of the station. 

Trains are running at reduced speed on all lines, while services are also subject to alterations, delays, and cancellations.

Temporary repairs are expected to be made as soon as possible, before a full repair overnight. 

There is ticket acceptance with Virgin West Coast, Great Western Railways, Cross Country, London Underground, and London Midland.