Hopefully you've already downloaded the Band Aid 30 version of Do They Know It's Christmas? after it went on sale at 8am this morning.

But in case you missed the debut on The X Factor last night, the official video for the fundraiser has now been released on the web too.

Filmed in the studio where the track was recorded on Saturday, the hastily produced promo echoes the style of the original 1984 video.

But the stars of the 1980s are replaced (apart from Bono of course) with current talent such as One Direction, Sam Smith, Rita Ora, Emeli Sandé, Chris Martin, Olly Murs, Ellie Goulding, Seal, Clean Bandit, Elbow and Ed Sheeran.

Appearing on The X Factor last night, organiser Sir Bob Geldof hinted that the promo might not actually be the final version.

"We'll have a rough edit on The X Factor and we'll have a rough edit of the film," he explained.

A physical copy of the song will go on sale in three weeks, costing £4 as a cassette single.

The government has agreed to waive the tax on the single - meaning more money will go to help fight ebola in West Africa.