The line-up for the fourth version of Band Aid's Do They Know It's Christmas? has been announced.

One Direction, Ed Sheeran, Adele, Ellie Goulding, Sam Smith and Emeli Sandé will be among the stars recording the track this Saturday - with the BBC co-ordinating efforts alongside Sir Bob Geldof.

Announcing the news today at a press conference in London, Sir Bob said the lyrics of the record-breaking fundraiser had been altered to reflect the "filthy illness" Ebola - which is currently out of control in several African nations.

Coldplay are also set to "phone in" their contribution to the single, because they're across the pond in LA at the moment.

Bastille, Paloma Faith and Olly Murs are also set to feature - though Sir Bob revealed that he had been unable to secure the services of Rita Ora because she is too busy working on The Voice.

He remained coy on who would be given the honour of singing the first line - which was performed by Paul Young in the 1984 original.

But he did hint that rock legend David Bowie could be in the frame for an appearance on the record.

He said of himself and co-creator Midge Ure: "It is something wonderful that this country reaches out.

"He and I both feel, the Irishman and the Scotsman, should gather the pop crowd together again and do our thing.

"It really doesn't matter if you hate this song or you don't like this song, you have to buy this thing.

"The sleeve will be a unique artwork by Tracey Emin. I really urge everyone. Don't download it, don't look at it on YouTube, it's a couple of quid. It's a great thing to do at Christmas.

"I spoke to Quincy Jones two weeks ago, he will reconvene the American artists."

The track has hastily been installed as the bookies' favourite for the coveted Christmas No 1 slot at 1/4 - above the X Factor winner at 3/1.