Apart from Saudi and Qatar mentioned above, I have seen UAE and Kuwait. They only seem to drive around Knightsbridge / Park Lane / Mayfair and sometimes up to Euston. I don't really understand it. If you can afford to ship or fly your car around, why not just buy a UK car to use in the UK. Or perhaps they transported the car once and it stays in the UK all the time while only being used a few times a year?
What about the most exotic place you saw a GB car? I saw a GB campervan in the Faroe Islands.
I saw a Nunavut plate in Vancouver (is it even possible to drive out of Nunavut?) and I saw a California car in Sydney (Australia - I suspect not so uncommon in Sydney in Canada though it is almost the furthest you can get)
What about the most exotic place you saw a GB car? I saw a GB campervan in the Faroe Islands.
I saw a Nunavut plate in Vancouver (is it even possible to drive out of Nunavut?) and I saw a California car in Sydney (Australia - I suspect not so uncommon in Sydney in Canada though it is almost the furthest you can get)