Some of Britain’s biggest pop stars, including Olly Murs, One Direction, Rita Ora, Ed Sheeran and Ellie Goulding have recorded a reworked version of Do They Know It’s Christmas?

The recording, with some new lyrics (revealed below), marks the 30th anniversary of the song, which was originally put together to raise funds for famine relief in Ethiopia, and is expected to raise millions to ease Africa’s Ebola crisis.

As singers arrived at the studio in London’s Notting Hill to record the track, Bob Geldof revealed George Osborne called him to reveal he would waive VAT on the single.

The move means 100 per cent of the money raised by the song will go to charity.

“The record, it’s a song,  but it’s an event,” says Bob. “And the next stage now is to turn this into a phenomenon like it was in the Eighties, and the only way to do that is to get people to buy the thing.”

The new lyrics appear in the second and third verses of the song and refer to the risks of cross-infection from comforting Ebola victims.

Talking to Sky News, Bob revealed that One Direction sing the first line of the song.

“I did a little talk before the recording, like a headmaster,” Bob added. “I said, ‘When you sing this, be aware that the rest of the world will be singing it with you. Put all the feeling of what it is you want to say into it. I explained the situation in West Africa, what the UN were saying and what we could do and just gee’d them up.”

The single goes on sale Monday, November 17.

It will premiere on The X Factor, ITV, Sunday, November 16, 8.00pm.

The reworked lyrics:

It’s Christmas time – and there’s no need to be afraid

At Christmas time we let in light and banish shade

And in our world of plenty we can spread a smile of joy

Throw your arms around the world

At Christmas time

But say a prayer – pray for the other ones

At Christmas time it’s hard but while you’re having fun

There’s a world outside your window and it’s a world of dread and fear

Where a kiss of love can kill you and there’s death in every tear

And the Christmas bells that ring there are the clanging chimes of doom

Well tonight we’re reaching out and touching you

No peace and joy this Christmas in West Africa

The only hope they’ll have is being alive

Where to comfort is to fear

Where to touch is to be scared

How can they know it’s Christmas time at all

Here’s to you

Raise a glass to everyone

And here’s to them

And all their years to come

Let them know it’s Christmas after all

Feed the world

Let them know it’s Christmas time again