One Direction have launched a campaign to tackle global issues.

The 'Story Of My Life' hitmakers have announced their Action/1D manifesto, asking their fans to describe the kind of world they want to live in by sharing powerful pieces including film and photos using the #action1D hashtag on their social media channels.

The four-piece group said: ''Time and again our fans have shown how creative and powerful they can be when they unite and that's why we want to all join together to speak out and hopefully make a real and lasting change to the world around us.

''Young people really do have the power to help end poverty, tackle inequality and to stop dangerous climate change. Now is the time for us to unite, take action and raise our voices to show that we care about the future of our planet.''

The campaign is part of action/2015 - a global citizens' movement - which aims to make 2015 the year when world leaders set the agenda to end extreme poverty, inequality and climate change.

One Direction join a host of high profile figures including Emeritus Archbishop Desmond Tutu, Malala Yousafzai, Sir Richard Branson, Shakira, Ben Affleck, Bill and Melinda Gates and Bono who have pledged their support for action/2015.