I have a better idea, seeing as the lovely tarmac roads that cyclists love so much are paid for by the massive rates of VED and fuel paid for by car drivers, why don't we make a law that cycles have to have their own VED and insurance before they are allowed on the road.
I also suggest that seeing as the most petrol hungry cars contribute the most money to the exchequer, we should have special lanes on all the motorways for any car over three litres or any car with more than 200 bhp.
We could invent a special rule where cyclists who have road bikes pay more in VED as they cannot survive without the roads paid for by car drivers. MTB'ers don't need roads so they can pay less. Obviously cyclists who have high powered cars get heavy discounts on VED. Also any roadie in team colours lycra should get an extra penalty as punishment for looking like a dick.