Cheshire Cat
The most curious thing..
Thinking about this and.......... .......................NoIndeed, some of them take some of their money abroad. But many of our higher earners and extremely wealthy also spend their money in the UK, in cars, airport taxes, restaurants, clothes, jewellery, poodle parlours and the like. Not all of them take all of their money abroad. Imported electrical goods might increase the income for, say, Japan or Germany, but an increase in Sales Tax (on these and other goods and services) would improve the UK state coffers.
One problem resulting from some of the lower earners, however, is they have cashed up, and gone to cheaper countries like Bulgaria and Romania. There has been a huge population swap during the past decade with the better-off going to more exotic places, the middling sort going to Spain and France and the less well-off going to those cheaper Balkan countries. To some extent, they have been replaced by the huge swathe of immigrants who have landed on these shores in between. And this is all part of the problem. Those who have come in are poorer than those who have left.