[Impy]

The Mayor of London, who was born in New York, has in the past been forced to pay US tax because of his American citizenship.

And we come to the real reason.

[fieldmarshaldj]

He’s a left-winger. Paying taxes is his patriotic duty.

[sinsofsolarempirefan]

Being British comes free of charge, although perhaps it out to come with a nominal annual fee to help pay for the consular services they are entitled to plus the navy and air force that will come in to haul you arse out of trouble if things get trick abroad.