Olympics 2012 security: welcome to lockdown London http://www.guardian.co.uk/sport/2012/mar/12/london-olympics-security-lockdown-london …
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Olympics 2012 security: welcome to lockdown London http://www.guardian.co.uk/sport/2012/mar/12/london-olympics-security-lockdown-london …