Met Line suspension - Fri 13th

I imagine it's something serious which has prevented the service from running entirely. It originally started with a suspension between Harrow-on-the-Hill, Uxbridge, Watford, Chesham & Amersham, then the service was suspended entirely.

The National Rail website quotes 'A fault with the signalling system between Harrow-on-the-Hill and Amersham means all lines are blocked. Trains running through these stations could be cancelled, delayed up to 90 minutes or revised. The Metropolitan Line is entirely suspended.'

For example, a shortage of control room staff, alongside the signalling problems at Harrow on the Hill could also have triggered a service wide suspension.

If it's something a points failure and the points have to be locked to a specific route, then they would try and keep a service running. Obviously something serious might have happened with the signalling up at Harrow-on-the-Hill, which has resulted in a whole line suspension. It's really just the service controllers on doing what is best for the Metropolitan Line. Obviously they have decided a suspension is best until things are resolved.

I have 0 clue what has happened, maybe one of our valued fourm members who work on the Underground can provide some insight.

Unlucky.

I'm no expert here but I presume its probably easier to suspend the service rather than run one at short notice between a section which is already served by the Jubilee and Circle/H&C. It's different to when there are actually planned works preventing services north of Wembley.

Either way, this won't really help many people much at all as they're as many, perhaps most, will be going north of Wembley, where the are no alternative options without the Met.

I don’t know for definite but my guess would be loss of the Signal main around Harrow
Again can’t comment on decisions over shuttles but crew reliefs and availability and possibly protection requirements for track access all likely to be reasons why

Well whatever it was, they've either slapped it, kicked it, dried it out, or nursed it back into life.

Metropolitan Line: Severe delays due to an earlier signal failure at Harrow-on-the-Hill. London Underground tickets accepted on Buses and Chiltern services.

I was stuck on a train between Harrow and North Harrow for a good while. Whatever happened, it must have been a pretty catastrophic failure for it to end up going as it did. However, full credit to the driver of our train who kept calm, in control of the situation and did her best to keep us informed of developments as they happened.

The feedback form has a technical problem at the moment, but will try again in the morning. Thanks for the suggestion Chris, it would have totally skipped my mind otherwise.

Yes, well I kinda did that on purpose.
I recall there was a similar complete unscheduled closure of the Met quite a few years back and after the event I heard it was a significant electrical failure in the Harrow Signal Box, on that day I recall the service was restored very late into the evening having been out most of the day and very few final trains ran.

Out of interest how far is the northern parts of the met away from being resignalled, I loose the plot on the detail of the dates.

Presumably what prevents Met trains terminating at Wembley Park is the difficulty in crossing over the Jubilee Line then under the underpass to Neasden depot then bang road to Wembley Park southbound?