Back up needed...

...to catch a speeding cyclist at the Ride London Freecycle event.  I joined thousands of others as we rode round 8 miles of traffic free London streets, taking in Trafalgar Square, Buckingham Palace, Waterloo Bridge etc.  Great fun.  And it's booked for next year!
This blip completes 3 years of uninterrupted blips.  Phew.