Far be it for me, cold-hearted Conservative that I am, to criticise greed, but why should anyone expect these people to give a toss about Britain ? They're the logical end product of modern Liberalism. As ever, Mark Steyn says it best:
Contemporary Canadian, British, Dutch and Swedish nationality is to a large extent self-mocking. In 1997, you may recall, the federal government marked the 50th anniversary of Canadian citizenship with the usual maple boosterism, in this case posters showing people of every conceivable hue with their hands circled around the globe. That's Canadian citizenship as the state sees it: there are no Canadian people, only whatever people from whichever spot on the planet happen to be in Canada at any particular moment.