Former British Prime Minister Tony Blair's autobiography 'A Journey' has broken sales records, say booksellers.

Blair's memoirs, based on his time as the prime minister, have became Waterstone's fastest-selling memoirs ever and shot to the top of Amazon's best-seller list.

Although Waterstone's refused to disclose precise sales figures, a spokesman said the book had been a "stupendous" and "unprecedented" success.

"We've never seen a book like this sell so quickly in one day. It's selling in the sort of numbers you don't see outside of mass market fiction with huge appeal - Dan Brown and JK Rowling are the competition here," the BBC quoted spokesman as saying.

The memoirs include Mr Blair's accounts of the Iraq war, the 9/11 terrorist attacks in America and Princess Diana's death.

He also wrote about concerns over the amount he was drinking and of the rift he had with his successor Gordon Brown.(ANI)