Prudential warns new rules may force it to move from UK
14 March 2012 Last updated at 02:19 GMT
The Prudential, Britain's biggest life insurer, says it is seriously considering moving its headquarters to Asia.
It is blaming new European rules on the amount of capital it is required to hold.
Prudential was founded in London in the mid-nineteenth century.
Its pre-tax profits rose by a third in the past year and much of that growth came from its Asian business.
The BBC's business editor Robert Peston reports.