Remember kids... always wear a helmet. (The almighty bikeradar helmet thread)

I'm not surprise, more than half the nodder in London take even more risk when riding because they're under the illusion that they're 'safer' due to wearing helmet, day-glo jacket, glove etc.

you shouldn't be riding aggressively just because you got helmet, jacket etc. ironically you're more at risk to yourself than not wearing helmet, day-glo that force you to take it easy.

I don't think the helmets make a difference, some nodders are just fucking oblivious of everything around them and therefore take risks (as we see them) but they're just plodding along and generally getting in the way. After some time in the saddle or advice they'll start to wise up if they're not driven into.