One Direction heartthrob Niall Horan has given fans a pre-Christmas treat by releasing an exclusive behind-the-scenes video tour from their recent 'Little Things' shoot.

The boyband's followers were given the opportunity to unlock the content via the lads' official Twitter page yesterday (December 23) and once they succeeded, they were given a link to the exciting clip. The 'One Thing' singers tweeted:

"Directioners! Time for some DETECTIVE WORK… Head over to Facebook for your challenge! Your prize: An exclusive video from Niall! 1DHQ x"

The video, which is just over a minute and a half in length, shows Horan walking around a building using a smart phone to record what he sees while explaining set details and talking to crew members.

Liam Payne is caught practising his piano skills and member Zayn Malik also features briefly. 

Watch the backstage tour below: