Sounds like an expensive MOT, hope it passes.
Of course with Gib there is the option of registering the car here, you have to pay 30% import duty, but the valuation is a personal appraisal, so if you smile and say nice things, like, you look good in uniform, or if your a woman
believe me the last one is a winner and it can be anyone, they don't have to drive there just be draped across the bonnet wearing a bikini. Ummm, where was I, oh yes, if you have an address in Gib or a job you can register a car, if you don't have either, then register a company and make the car a company car.
The upside is, MOT every 2 years, you can still take the car into Europe, UK, etc etc and there is no road tax.
Technically if you are driving a UK registered car, you should have UK road tax, also you only have 6 month before they technically impound the car and crush it to make sea mines as Spanish fishing boats are a big worry here.
Pick out the facts for from a call humour.