- Around 28,500 cyclists took part today
- In 38 years around 750, 000 riders have taken part
- They have cycled more than 40 million miles between them
- Riders have raised over £57m to go towards fighting coronary heart disease
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A Met Police officer was left red-faced after attempting to stop a cyclist riding along a dedicated cycle path.
The number of people allowed into official spectator areas will be cut by a fifth with just 100,000 tickets available.
The mayor was being challenged by Labour following his selection as the Tory candidate for the safe seat of Uxbridge and South Ruislip.