This is the London version of the weekly NSCoder Night meetings that are held around the world. There are some subtle differences, though.
We meet monthly, rather than weekly, and we do so on the third Tuesday of the month. Currently we meet at The Kings Arms65 Newcomen StreetLondon SE1 1YT (near London Bridge Station). It's not a large place - just look for the geeky bunch.
This is a very informal setup. There is no need to let me know that you are coming, or to apologise if you can't make it. This is just a pub, so come along and find us. You don't have to bring a laptop; you don't have to have a question to ask. You don't even need to be a Mac or iOS programmer; as long as you are interested in programming for Apple devices.