[zeristor]

On the Underground there were two carriages for smokers, they were usually a bit more empty, and they were browned with tar on the walls and ceiling.

The ban on smoking on the Underground was after the second tube station fire when they realised it might be dangerous, there was also a football stadium that caught fire around the same time too.

The root cause seem to be a build up of rubbish, along with a cigarette but starting it.

So many tragedies in the mid-eighties UK.