The alleged leader of a plot to bomb Britain boasted he had been in a video with Osama Bin Laden, a jury has heard.
Omar Khyam denies conspiring to cause explosions
Omar Khyam, 24, of Crawley, West Sussex, said his masked face was seen in the video, the Old Bailey was told.
But the main prosecution witness, American supergrass Mohammed Babar, 31, added he did not believe the claim.
Seven men, who all come from London and the south-east of England, deny conspiracy to cause explosions between January 2003 and March 2004.
Mr Babar told the jury he had also discussed plots to attack Big Ben and New York's Times Square on New Year's Eve with a British man not on trial, Ansar Butt.
The defence says any discussions of plots were "all talk" and there had been no intention of going through with them.
Babar has been flown from prison in America to give evidence
But Mr Babar told the jury Mr Khyam "was saying he wanted to do multiple bombs in Europe".
The trial has heard that the men were planning to bomb nightclubs, pubs, trains and shopping centres including Bluewater in Kent.
Mr Babar has been flown from prison in the US to give evidence against the Britons.
Waheed Mahmood, 34, Jawad Akbar, 22, Mr Khyam and his brother Shujah Mahmood, 19, all of Crawley, West Sussex, each deny a charge of conspiracy to cause explosions.
Denying the same charge are Salahuddin Amin, 31, from Luton, 23-year-old Anthony Garcia - also known as Rahman Adam - of Ilford, east London, and Nabeel Hussain, 20, of Horley, Surrey.
Mr Khyam, Mr Garcia and Mr Hussain each deny possessing ammonium nitrate fertiliser - a chemical that can be used in bomb-making.
Mr Khyam and Shujah Mahmood deny possessing aluminium powder, also used in bomb-making.
The trial continues.