I would be surprised if Andrew knew where the Kings Cross Thameslink station (where trains to Brighton could be boarded) was. It was East of Kings Cross and you had to cross roads to get there. The trains were below ground and the entrance wasn't very prominent. Most people who caught trains there were going north. They arrived by underground and so didn't go up to ground level.
Kings Cross was fairly seedy at that time. There were always a few homeless people hanging around outside the station and drugs were dealt there. There was a very seedy pub with strippers and heroin was a big problem in that area. Just North of Kings Cross was an awful area with disused gasometers etc I think it was around that time that a female Austrian tourist visiting London walked into that area. Some kids attacked her, gang raped her and then threw her into a canal.
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