I often get a bit frustrated that so few of London’s climbers venture out of their warm, safe, cosy gyms and take on the city’s buildering problems. So it was quite refreshing when I stumbled upon this on twitter the other day. A few classics ticked in fine style and one or two that I’ve not seen before. And the guys have kindly provided a map of their favourite problems – click here. (And a quick shout out to Caedmon and David for putting together the original map.)