I have read that some South Korean nighclubs require patrons to remove their shoes. That sounds cool. I suppose it would prevent one's toes being squashed on the dance floor by sharp heels.
I can't imagine a British nightclub having a shoes-off policy. The few nightclubs I have been to (I would not want to encourage people to go to nightclubs) were pretty dirty places. You might not want to be shoeless in them. Of course, one occasionally saw girls going shoeless on the dance floor, but I am not sure they would have taken their shoes off if they had not been drinking.