In addition to the problems out of Euston station, there are also problems at King's Cross. East Coast is advising customers out of King's Cross not to attempt to travel on its services north of Newcastle.
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Officers were given the touching letter at Brixton Station while they were on a reassurance patrol after yesterday's attack
The 52-year-old had previous convictions for violence but was not on the anti-terror watchlist.
In a statement Charlton Athletic said: Keith was a true hero who will be greatly missed by all the Charlton family and everyone at the club.