A note of caution for those that use the P4 to get to or from Canary Wharf. I had my purse stolen out of my handbag at about 6pm last night as I was getting on to the bus at Lewisham bus station. There was quite a large crowd of people getting onto the bus and in the crush the guy beside me managed to open my bag and steal my purse. I've been using the P4 for some time now and nothing like this has ever happened before, but it seemed like a MO he had used before so you may want to be a bit more vigilant.