You can find some of my friends

in this FREE social group:

http://www.meetin.org/city/meetinlondon

This group organise events in London for free, all you have to do is create your profile and attend to the event you want to join. Then all you have to pay is your orders such as your drinks if the event is in a bar.

Everything is managed by easygoing and friendly volunteers.

Hope it helps you.