Heather Mills polled the 'World's Biggest Gold Digger'

Sir Paul McCartney's estranged wife Heather Mills has been polled the World's Biggest Gold Digger, in a survey conducted by OnePoll.

The animal rights activist beat the late Anna Nicole Smith to take the maximum votes in the survey of 2,000 British Internet users.

OnePoll spokesman John Sewell said that that is no surprise that Mills emerged the winner.

"In the hype surrounding Sir Paul's divorce, it comes as no surprise that Heather has been named the world's biggest gold digger,' Sewell said.

"To walk away with so many millions after just four years of marriage is incredible,' he added.