Ronan Keating was among the performers

Coldplay singer Chris Martin joined an A-list line-up including Paul Weller, Faithless and Ronan Keating at the sell-out show at the Shepherd's Bush Empire in London on Saturday.

There were also video messages from Elton John and Yoko Ono at the show, entitled One Big No.

The show is the latest attack against the war from UK musicians, coming after Chris Martin's attack on George Bush at last month's Brit Awards.

Faithless musician Maxi Jazz said he was perplexed as to why stars' views were getting such attention.

"If you've been on MTV half a dozen times, it seems your opinion matters more than everybody else's - it's a mad situation," he said.

"But if that is the situation, I might as well use it to wake people up to the idea that there is no case for war whatsoever."

'Positive'

The show was organised by Emily Eavis, the daughter of Glastonbury founder Michael Eavis.

Eavis was instrumental in introducing the Coldplay frontman to the Fair Trade organisation, which aims to give fair prices for Third World farmers.

Martin has played a charity concert for them, and has travelled with the organisation to Haiti and the Dominican Republic to highlight its projects.

Fran Healy of Travis also played

Eavis said the show was be one of the last opportunities for musicians to voice their opposition before war starts.

"War is inevitable. This is a very sensitive time. But we are hoping that people can get a positive aspect out of this," she said.

The looming war with Iraq has sparked several protests, with Ms Dynamite and George Michael also registering their opposition.

But this week Oasis star Noel Gallagher told a German newspaper that he thought anti-war protest were "a bloody waste of time".

He said the US had already decided to attack Iraq and opposition was pointless.