Count yourselves lucky !
In Australia, a country with a population one-third of the UK, there are State driving licences and driving laws instead of Australia-wide laws. I bought a car in Queensland which was registered as a Queensland car and I had a Queensland driving licence.
Then I moved to Melbourne in Victoria and had to re-register my car there, get new Victorian number plates and a Victorian driving licence.
2 years later I moved back to Queensland, had to get an MOT for the car, re-register it in Queensland with new number plates (not the same as the first pair)
and exchange my Victorian driving licence back to a Queensland licence.
Of course there were plenty of charges for all these changes...