London becomes 'billionaire capital' of the world: Study

London has become the capital of the world's wealthiest, a new study has found.

The study of the super-rich found that London has more billionaires than any other city in the world.

According to stuff.co.nz, the Sunday Times, which published the list, said that the city has 72 residents whose fortune exceeded one billion pounds.

Britain also has more billionaires per head than any other country, with one billionaire for every 607,000 Britons versus one for every 1 million or so Americans, the report found.