The Cycling Minister said today he saw both very good and very bad infrastructure on a ride around the capital but denied he felt in danger at any time.
Robert Goodwill spent an hour cycling around London, from Kings Cross to Westminster via Camden, Southwark and Lambeth.
But Mr Goodwill criticised confusing road markings and bike lanes in Southwark, after venturing south of the Thames on his Brompton folding bicycle, joined by Department for Transport aides.
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His top speed is believed to be the highest ever recorded in the UK by a rider carrying a pillion passenger.
The mayor took time out from City Hall to join Conservative party workers handing out leaflets in Uxbridge and South Ruislip.
No matter where you look, London's population is getting older - with the exception of one of the capital's boroughs.