NRES said:THIS INCIDENT HAS BEEN CLEARED
Summary Signalling system problem at Amersham
Time reported 06:25
TOC(s) affected Chiltern Railways
Route affected London Marylebone-Amersham-Aylesbury-Banbury-Birmingham Snow Hill
Description Services between London Marylebone and Aylesbury are being disrupted due to a signalling system problem in the Amersham area. Short notice alterations, cancellations and delays of up to 50 minutes expected.
There is no estimated time for normal service to resume.
Easements London Underground, Virgin and Silverlink trains are accepting Chiltern Railways tickets on reasonable routes
Updates
07:15 All Chiltern Railways services will be diverted and run via Gerrards Cross. Diverted trains will call at High Wycombe, Gerrards Cross, Beaconsfield and Denham. Services between London Marylebone and Birmingham will also go via Gerrards Cross
07:40 A replacement bus shuttle will now run between Aylesbury and Amersham where customers can connect with London Underground services.
The replacement bus shuttle between Denham and London Marylebone will now start/terminate at West Ruislip to connect with the diverted train services
Time reported cleared 08:50
Odd! Anyone know what's going on?