[gaius]

OTOH last time I was in St.Pancras there was a guy collecting the fees to use the washroom

The toilets at St Pancras are free and always have been. He was just some random guy you gave money to!

[ghaff]

Maybe was another a London station. Recall there being a turnstile.

[dasmoth]

King’s Cross is right next door and had turnstiles last time I was there.