Heartthrobs Harry Styles and Liam Payne, of One Direction fame, recently partnered with cancer charity Trekstock and have now announced details of a special competition that will see the winner enjoy a night out in London with them .

In order to enter the contest, fans have to make a donation to the organisation and different amounts will earn them different numbers of entries and accompanying treats.

For example, if you donate £3/$3/EUR 3/AUD $3 you will receive just 1 entry, but a £25/$25/EUR 25/AUD $25 donationa will give you 10 chances to win along with a special thank you video and digital signed polaroid and an exclusive campaign bracelet.

In the accompanying promotional video, the pair can be seen talking about the disease: "It's a shocking fact that 1 in 3 people will develop cancer at some point in their lives [...] Cancer affects us all in some way and we all know someone who's had it. That's why we want you to get involved in Trekstock."

The sweepstake will end at midday (BST) on August 19 and you can click here to make a donation and be in with a chance of winning the amazing prize.