Are the state pension triple lock's days numbered? PM says guarantee isn't under threat despite experts saying it's 'not sustainable'
![Are the state pension triple lock's days numbered? PM says guarantee isn't under threat despite experts saying it's 'not sustainable'](http://i.dailymail.co.uk/i/pix/2016/08/01/11/0A448B61000005DC-0-image-a-5_1470047873281.jpg)
Over the weekend, Prime Minister Theresa May had to deny plans to slash state pension payouts for millions of Britons. We take a look at why the triple lock could be at risk.