I heard this last night, while tuning my radio around the dial. So I went to the computer and found the program on the BBC Radio website. I thought of putting a tape in, and recording the program, but I knew I could find it on the BBC website:

http://www.bbc.co.uk/programmes/p0074d4p

This is actually a series of short segments, ALL of them about bicycle, and it runs for like 24 or 25 minutes, so don't click on this if you have to go out the door in five minutes.