The London Critical Mass bike ride on Friday of last week was a great celebration of cycling.
Nearly 1,200 people turned up, many for the first time. The event has been taking place on the last Friday of the month for the last 11 years.
But at the September event police handed out leaflets telling people they were on a demonstration and threatening arrests.
This approach spectacularly backfired.
As press interest hotted up the police backed down and far more people than usual turned up. The ride made a first stop at Buckingham Palace, then down to Parliament Square for a long stop outside parliament.
Then it went to 10 Downing Street and finished in Trafalgar Square. Over 600 leaflets were handed out for the cycling section of the climate change demonstration on 3 December.