Chiltern Railways disruption 02/10

Hello. I'm not sure if there's a thread but apparently the 18:50 from London Marylebone to Oxford is now 4 and a half hours late due to a power failure. Hopefully this won't break the record for the longest delay.

I'm guessing the 18:50 was a 168.

Part of the train wasn't on a platform (Gerrards Cross I believe) so passengers couldn't be detrained.

Why 4 and a half hours to get a train going? If it's diesel then your fine I'd have thought but a full electric train (rather than bi-mode) is a different matter.

I understand the 18:50 had to manually move through signals.

Looking on Realtime Trains, it seems the problem was a complete loss of signalling somewhere in the vicinity of West Ruislip. First affected trains appear to have been 1H68 1707 Birmingham Snow Hill to Marylebone, which terminated at West Ruislip at 1900; and 1G55 1847 Marylebone to Birmingham Snow Hill, which passed West Ruislip 164 minutes late.

From what i was told when i booked on this morning it was a power failure causing loss of signalling cotrol between Neasden south junction and South Ruislip.