Those who are in the know will often choose to travel from central London to Wembley via Marylebone Station.
Chiltern Railways have, this evening, been affected by Signalling problems at Leamington Spa. Unfortunately the same sort of problem is now affecting equipment in the Wembley area.
There do appear to be a small number of train cancellations. London bound trains seem to have delays of about 10 minutes, while Northbound services seem to be worse, at about 25 minutes.
I am not there, but I don't suppose that Marylebone is a sea of tranquility at the moment.