Went to London recently and wanted to go to a greek based night at a bar/club and had no idea where to go and asked some people but they didn't have a clue as its a bit niche. Then I was told about
http://www.clubhunt.co.uk which shows you how to get club night info for all club nights going on in London and the U.K on your mobile, so you can search for greek music, or even spanish music etc. Hope this helps any people going out and wanting to find some greek stuff going on when they are in the U.K