"Robin May" wrote in message
Highbury and Islington (silverlink platforms) is a rather unpleasant
place to wait for a train, although entertainment is provided in the
form of occasional violent spectacles.

The worst I've had on a train was on a West Anglia 'inner London' service,
it was a service from Chingford I boarded and there was a guy wandering
around the train with a knife.
IIRC I had come from Blackhorse Road and needed to get back to Liverpool
Street, after that it was a case of, Next time will use Tottenham Hale
instead!