Young Londoners are put off cycling to school because of bike thefts and street gangs, former Olympic boss Lord Coe today claimed.
In a thinly veiled attack on the government, he called for a 'coherent' policy to encourage physical activity.
Lord Coe, president of the governing body of athletics, was speaking at the start of the World Athletics Championships in London.
The 2012 Olympics adopted the slogan 'inspire a generation' to try to motivate more young people.
But figures from Sport England suggest the number of adults taking part in sport is unchanged from five years ago.