Fresh evidence is revealed today about how MI6 and the CIA were told through secret channels by Saddam Hussein's foreign minister and his head of intelligence that Iraq had no active weapons of mass destruction.
Tony Blair told parliament before the war that intelligence showed Iraq's nuclear, chemical, and biological weapons programme was "active", "growing" and "up and running".
A special BBC Panorama programme tonight will reveal how British and US intelligence agencies were informed by top sources months before the invasion that Iraq had no active WMD programme, and that the information was not passed to subsequent inquiries.
It describes how Naji Sabri, Saddam's foreign minister, told the CIA's station chief in Paris at the time, Bill Murray, through an intermediary that Iraq had "virtually nothing" in terms of WMD.
Sabri said in a statement that the Panorama story was "totally fabricated".
However, Panorama confirms that three months before the war an MI6 officer met Iraq's head of intelligence, Tahir Habbush al-Tikriti, who also said that Saddam had no active WMD. The meeting in the Jordanian capital, Amman, took place days before the British government published its now widely discredited Iraqi weapons dossier in September 2002.