On Air Now
Stephen Mulhern and Emma Willis 9am - 12pm
Thousands of bikes are now available for hire across town as the London Cycle Hire Scheme goes live.
The Mayor's admitted he is worried about the 6000 bikes being stolen and vandalised while the Green Party says helmets should be provided.
For now you can only use the bikes if you're registered - in a few weeks you'll be able to turn up and use them.