Media playback is unsupported on your device

Boris thanks his London cycle ride 'good Samaritan'

4 August 2013 Last updated at 18:26 BST

More than 20,000 cyclists have been taking part in a 100-mile race from London to Surrey on the second day of the UK's largest ever mass participation cycling event.

Twenty-five top professional cycling teams also competed over an extended version of the route.

London Mayor Boris Johnson was one of the participants who set off early on Sunday morning from the Olympic Park in Stratford, east London.

He described a hitch with a puncture in Cobham, Surrey, and how a ''good Samaritan'' came to his aid.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.