Path to Tower Bridge and City Hall, South Bank, London, England

I don't take any notice of security guards when I'm wandering around in London, they'll moan and groan, but they can't do anything, they can't touch you or take your camera. If you don't move all they can do is threaten to call the police. I can only imagine the phone conversation "there's a guy taking photos in London...we need police urgently..." it's ridiculous. Especially so when it's 4am in the morning