Should do away with the road tax altogether an stick it on fuel
Runs off and hides 
Let's say you buy a tank of fuel a week...so 90x52=4680 at an average of 1.33. So that's £3600. The extra tax should only be 1-2p, but then that means you might pay £36-72 for your road tax. Someone driving a small diesel might manage to only pay half that...
The government would very quickly realise that this amount earns them very little revenue. So they make it 10p on the litre price. Suddenly, you're paying £360 pounds a year, an extra £100
Using the same numbers for myself, the first example I would pay £65-130. In the second, more likely scenario, that's £650 a year...
Applying the same numbers to trucks and buses, that would cost the transport industry about £6000 per vehicle each year, about 7 times what it costs to tax an artic at the moment. Great you might think, that'll mean all those foreign trucks will have to pay as well...
Wrong, they come here carrying 1000+ litres of fuel already, no reason for that to change, so we get shafted all round

I'll let you mull that over... then you can pop the idea somewhere warm and dark
