The collection of vehicle excise duty, issuing the driving licenses to the drivers, numbers to the vehicles and other operations related to the vehicles are managed by DVLA. Driver and Vehicle Licensing Agency (DVLA) is an organization under the government of United Kingdom which maintains the complete database of all the drivers and the vehicles in the country. It is under the direct control of department of transportation. Based in Swansea, South Wales, it has a network of offices known as local office network, all around Great Britain. Electronic vehicle licensing allows the users to pay vehicle excise duty online or by phone.
In UK, if you own a car, whether you drive it or just store it on the public road you need to pay the road tax, also known as vehicle or car tax. If kept off road, the vehicle should either have Statutory off Road Notification (SORN) in force or should be taxed. Else your car could be removed or wheel clamped. Car taxes in UK are based on the car's Co2 emission in g/km. Various car tax bands are created based on the volume of the Co2 gas the car produces. Cars producing up to 100g/km of gas are placed in car tax band A, between 101-120g/km gas in band B whereas 121-150 g/km of Co2 gas in band C and so on. The owners whose cars fall in DVLA car tax bands A and B are not required to pay increased car tax rates. This surly is the reward for having environmental friendly vehicles.
Once you have paid the DVLA car tax, you need to display a valid tax disc in your front window as the proof. The road tax can be renewed half yearly or yearly using the reference number from the reminder form or valid MOT certificate. DVLA keeps a regular check in order to identify the untaxed cars. Fine of £80 is imposed within 4-6 weeks if your tax is running out. The amount could be reduced to £40 if paid within month. If not it is increased to £1000 plus your car may be clamped. If declamping fee is not paid within 24 hours, DVLA impounds your vehicle and disposes it if not claimed within 7 days. You need to keep your tax and MOT updated and have insurance in order to troubleshoot tax related problems.