Just a small aside really .....
My little sports car was registered in 1995 so pre-dates the CO2 banding system, the VED rate for that went up from £180 to £200. It is a 650cc Japanese Kei-car and does around 55-60mpg typically.
In contrast my 2011 1.33Lt Yaris tax rate was £30, now £35.
My motorbikes are in the higher category, 600cc and above. The VED has gone up from £101 to £111.
I have a 300cc Yamaha "tricycle", a scooter with 2 front wheels. By a totally bizarre categorisation system, if the front wheels are less than 450mm apart is counts as a "bicycle" for legal/tax purposes and needs a full motorbike license, if the wheels are more than 450mm apart it becomes a "tricycle" and can be ridden on a car license (utterly bonkers idea, but hey ho). A plus for car license holders who want to ride one, but it means that instead of 300cc bicycle VED of £52 it is the full tricycle rate of £111, because it was engineered for car license usage. The 125cc version of the bike is a Class II "bicycle" because the wheels are less than 450mm apart.
It also means that the MOT is a Class III (tricycle) rather than a Class II (motorcycle/bicycle), and relatively few garages are qualified/equipped to do Class III (usually either Class II for bike garages or Class IV for cars), so I'm going to have to travel a good few miles to get to my nearest Class III MOT place, neither of the places I usually use for bikes and cars are Class III places.
....but it was my choice so ........
I SORN them all over winter so get some VED refunded anyway.
Don't you love the "simplified" bureaucracy ideas of our governments.