This is a regular topic with the same old demands that cyclists are licensed, taxed and stuck to cycle paths so that perfect car drivers can have the roads to themselves....So all kids will have to have number plates on their bikes when cycling to and from school or to their friends' houses. Presumably they'd have to pay for their plate which would have to be licensed. So 3 kids in a family that's 3 plates and 2 more if mum and dad cycle. Have you thought this through? What about horses too, presumably thye should have number plates. They are road users and hold up traffic on country lanes, and that includes cyclists.