This video was shown to me at the Driver CPC course I undertook at the start of the year. I've got nothing against cyclists whatsoever and am hoping the great results Team GB won so deservedly during the Olympic Games will spur on a cycling revolution.
The problem cycling clubs have in promoting their sport, however, is that absolutely anyone can jump on a bike and cause havoc on the roads. Not so for lorries, buses, coaches or cars. Cyclists are generally untraceable and often have no or very little knowledge of the road/path on which they're cycling. Their cycles do not need to meet minimum safety standards every year - there's no need for them to be checked by anyone, ever.
All the above makes cycling very accessible, but more elements than ever are left to the conscience of the cyclist themselves and this is where the problems are located.