I'd like to throw in a quick plug for a company I've been doing some work with - they're absolutely fantastic (as someone who just moved to London, I would have used them even if I hadn't ended up working with them!). Spoonfed - London's Best Event's Site is an event listings site that not only has the listings of every event in London (think, concerts, club nights, exhibitions, dance classes, pub quiz nights, etc!) but registered members can input their interests and location and get customised event listings. Thanks for taking a look - the site's about to get a massive relaunch so it'll look quite different in a few days but hope you all find it a useful social tool in London!