A baby born last year is 8 times more likely to live until 100.

A baby born in 2011 is almost 8x more likely to reach 100 years old than the childs great grandparents.

It would have a 29.9 per cent chance of becoming a centenarian, according to the Office of National statistics.

A child born in 1931 had just a 3.8 per cent chance.

Twenty-year-olds are 3x more likely than 80-year-olds to reach the landmark. By 2066, there will be at least 500,000 Brits aged 100 or over.

The figures revealed the full extent of Britain's ticking pensions timebomb.

Pensions minister Steve Webb said last year: "These figures show just how great the differences in life expectancy between generations really are.

"The dramatic speed at which life expectancy is changing means that we need to radically rethink our perceptions about our later lives.

"We simply can't look to our grandparents' experience of retirement as a model for our own. We'll live longer and we'll have to save more."

A report published last year says up to 14 million people retiring after 2020 will end up with pensions far smaller than their parents.