George Galloway plans to go on the attack once more over a US Senate Committee's accusation that he took oil money from Saddam Hussein.

The MP for Bethnal Green and Bow is now demanding to see the original Iraqi government documents on which the Committee based its allegations, after claiming he was handed nothing but a sheaf of US transcripts. He hopes to demolish the case against him by proving that the originals are forgeries.

Mr Galloway won many admirers on the American Left for his spirited performance before the US senators last week. He accused the committee chairman, veteran lawyer Senator Norm Coleman, of blackening his name without bothering to contact him to ask for his version of events, saying: "You are remarkably cavalier with any idea of justice."

He is now seeking to drum up offers for a US lecture tour, to capitalise on his new-found popularity and high profile in America.

Today his spokesman told Times Online that while Mr Galloway was in America on his proposed two-week speaking tour, he would take the opportunity to go back on the attack.

"It is something that has not sufficiently come out that what the committee put up as exhibits were in fact all typed up in English, though masquerading as original Iraqi documents," said Ron McKay, Mr Galloway's spokesman.

"They gave us the documentation on the spot as we went into the committee hearing, we hadn't seen it before. On an A4 sheet there is this fairly clear, English-typed document, and behind it, almost obscured, there is this grey smudge which appears to be what they called the original document. But it is completely illegible and totally obscure.

"They didn't make it clear in the hearing that these weren't in fact the real documents. So we are demanding to see the originals, and to have them forensically examined."

The Senate's Homeland Security and Governmental Affairs investigation sub-committee released documents last week, saying that they showed that Mr Galloway and other senior international figures had received valuable oil trading allocations - in Mr Galloway's case, allegedly 20 million barrels - as a reward for opposing UN sanctions on Iraq after the first Gulf War.

In response, Mr Galloway caught the first available flight to America to put his version of events. The former Glasgow factory worker's colourful rhetoric made a big impression in the staid confines of Capitol Hill.

On Wednesday, the day after his return, he was contacted by phone in Britain by a US promoter, who suggested that he set up a speaking tour. Mr Galloway now hopes to spend two weeks, giving a mixture of paid-for public appearances and free speeches to groups of anti-war activists.

Mr Galloway told The Sunday Times yesterday: "I have been asked to go on a highly lucrative lecture tour, with the promise of very large audiences...

"I think in the United States the ground was tinder dry, waiting for a spark like this. The democratic underground is alive with the transcript and video screening of this event, so there are a lot of people in the United States who are very happy about it."

It is understood that fees of $5,000 per speech have been mooted, although one agent said that Mr Galloway could easily commande up to $30,000 per appearance. Harvard, Princeton and Yale universities have all been suggested as possible venues, although the politician's spokesman cautioned that nothing had yet been arranged.

"Nothing is booked yet, it is very early days," said Mr McKay.

"We are trying to get offers. Obviously, it is beyond us to do it from here - we need someone who is experienced in it. One promoter has already been in touch.

"George is looking forward to getting back there as quickly as possible. It is quite important to strike while the iron is hot. The message of the tour will be the same: the illegal war. No-one seems to have been banging that drum over there, or if they have it hasn't been getting through. George is trying to focus the anti-war movement over there.

"And also it gives us the opportunity (to push our case before the Senate), as we have demanded to see the original documents."

The spokesman added that Mr Galloway had received over 10,000 e-mailed messages of support after his Senate appearance, from all over the world, boosting interest in Respect, the political party that he founded after being kicked out of the Labour party for the vehemence of his anti-war views.

"In fact, we have had lots of people from America wanting to join Respect," revealed Mr McKay, agreeing that the interest was likely to boost the party's finances.

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