Teen heartthrobs One Direction have unveiled their new video for the track 'One Thing'.

The video, which marks the third single release from their debut album 'Up All Night', sees the quintet take a trip into London on a red double-decker bus.

From there they decide to embark on a bit of busking in front of the London public, meeting their enthusiastic fans along the way.

As dusk begins to settle, the boys stop off at a few other London locations to meet more fans, who at one point join in on a mass sing-a-long.

Continuing the bus theme, One Direction were caught up in a prang recently after their tour bus was hit by another vehicle - but no injuries were reported.