Re: Fair enough, but...
We also need legislation to make the (small number) of nutter cyclist
Absolutely. I wish I could give you +10.
I cycle and maintain the cycles for the family where everyone cycles. Some of us clock > 4k per year cycling in an urban environment. As a responsible cyclist I would like to sign under this, despite knowing that it is a very tough one in the UK. Just to be clear - I also drive (clocking > 18k in a some years).
UK has no identity document requirement, so the only option the police has it to impound the cycle and/or arrest the person on the spot for the worst cases. I remember when they used to do the former (I have never seen them do the latter). Nowdays - they cannot be arsed. As some other people noted - the legislation is mostly there, just nobody can be bothered to enforce it.
There are plenty of people who deserve being arrested and/or having their precious >400£ bicycles put into a garbage press in front of them too. I see anything between 2 and 5 idiots per mile cycled who jump red lights, bunny hop in front of cars, have no lights while wearing dark clothing during the hours of darkness, ignore priority at roundabouts and worst of all have no brakes (the f*** fixie riders).
As far as the legislation - all for it. The case when a woman got killed in broad daylight by a cyclist on a fixie without brakes and he GOT AWAY WITH IT with only 19th century legislation being applicable comes to mind. Cycling dangerously and cycling on a not road-worthy bicycle should be punishable offences. Same as it is for driving and cars.