Five cycling tests for Sadiq Khan | Andrew Gilligan

Will the new mayor uphold his election pledges and prove he is serious about improving cycling in the capital, asks London's former cycling commissioner

Over the next few years, the future of cycling in Britain may depend on what happens in London, the place that has done more than any other to build segregated bike lanes.

Only six months after they opened, the new tracks have succeeded beyond our wildest dreams - the Embankment one carries an astonishing 3,000 people an hour in the peaks, according to Transport for London's Alan Bristow.