In the Victorian seaside town of Douglas, a new mood of uncertainty has punctured the customary ebullience of the Isle of Man's senior legal and financial officials as they fret about the loyalty of their most powerful neighbour. "If jettisoned by the UK, we will have to fight tooth and nail for our survival," says William Corlett, the island's attorney general.

In the 1960s, young Manx people began to leave the windswept island until politicians started creating jobs for them by scrapping taxes and luring financial institutions to do business in the self-governing Crown dependency. Finance, says Mr Corlett, is what has saved the Isle of Man, 60 miles off the western coast of Britain, from the fate suffered by other isolated outposts such as Scotland's Western Isles, which are plagued by depopulation.