Some events from Occupy London and other local campaigns:
http://occupylsx.org/?p=3966 – this weekend and scroll down to comments on that page for an article from Transition Shoreham in Sussex.
http://www.ourolympics.org/Our_Olympics.html – explanation of why some people want to demonstrate at the Olympics
http://www.waronwant.org/news/events/events/upcoming-events/17443-blood-sweat-a-gear-the-human-cost-of-the-london-olympics – related War on Want event this Saturday
www.gamesmonitor.org.uk/node/1520 – further article about London 2012