THE West Yorkshire suicide bombers planned their murderous attacks on a shoestring budget, it emerged today.
And an official inquiry into the July 7 terror attacks is also expected to show no links between the men and al Qaida.
It is likely to paint a picture of four men planning terrorism via the Internet.
The Government is now facing renewed calls for an independent inquiry into the July 7 London bombings.
Conservatives said an independent probe was vital to avoid "another Government whitewash".
The demand came after reports that the official inquiry into the attacks will say they were planned on a shoestring budget and did not have any direct support from al Qaida.
According to reports, the Home Office inquiry, being compiled by a senior civil servant, will say the atrocities were not the work of an international terror network as originally suspected. Rather they were carried out by four men who had scoured terror sites on the internet.
The four bombers were Mohammed Sidique Khan, 30, of Thornhill Lees, 18-year-old Jermaine Lindsay, of Rawthorpe, and Shehzad Tanweer and Hasib Hussain, both of Leeds.
They detonated bombs on three Tube trains and a London bus.
Tory homeland security spokesman Patrick Mercer said the lack of a link with al Qaida was difficult to believe.
He said: "The leak suggests that the Government's narrative on the attacks is going to make no connection with international terrorism and al Qaida.
"I find that very hard to believe. A narrative from the Government is going to come from the same sources that provided us with the dodgy dossier over Iraq.
"This is why an independent inquiry is important and not just another Government whitewash."
The Government has repeatedly rejected demands for a public inquiry into the attacks. Instead it will publish a definitive account of what happened in a written narrative.
Tony Blair has said a public inquiry is not necessary. There are numerous inquiries by MPs' committees. And the Prime Minister has said it was already know "essentially" what happened.
Furthermore Mr Blair says a public probe would divert a massive amount of police and security service time.