An alleged British terror cell accused of plotting to cause explosions was bugged and filmed in a security services operation, a court has heard.
The seven men all deny plotting to cause explosions
The men, who allegedly spoke of attacking Bluewater Shopping Centre in Kent as well as spiking football fans' beer, were tracked since January 2004.
Eavesdropping equipment was used in cars and houses belonging to two suspects, the Old Bailey heard.
All seven men deny conspiring with a Canadian to cause explosions in the UK.
Extensive CCTV footage was taken of the whole gang's movements and thousands of hours of audio tape were recorded and broken down into 60 transcripts.
The covert operation continued until the arrest of the defendants on 30 March, 2004, the court was told.
Junior prosecution counsel Mark Heywood told the jury that the operation, codenamed Crevice, was carried out by the security services, Special Branch and the Metropolitan Police's anti-terrorism squad.
Omar Khyam, 24, his brother Shujah Mahmood, 19, Waheed Mahmood, 34, and Jawad Akbar, 22, all from Crawley, West Sussex, Salahuddin Amin, 31, from Luton, Bedfordshire, Anthony Garcia, 23, of Ilford, east London, and Nabeel Hussain, 20, of Horley, Surrey, deny conspiring to cause explosions in Britain.
Mr Khyam, Mr Garcia and Mr Hussain also deny a charge under the Terrorism Act of possessing 1,300lb (600kg) of ammonium nitrate fertiliser for terrorism.
Furthermore, Mr Khyam and Shujah Mahmood deny possessing aluminium powder for terrorism
In Tuesday's hearing, the court was told that an address in Slough, Berkshire, where Khyam, was staying, was bugged as was the then home of Mr Akbar in Uxbridge, west London.
Listening devices were placed in Mr Khyam's silver Suzuki Vitara car and Mr Garcia's Audi A4.
A further device was placed in the Access Self Storage depot in Boston Road, Hanwell, west London, where the gang allegedly stored the fertiliser.
Television surveillance was also used at the depot, at two suspects' addresses and three internet cafes.
The court also heard evidence from two members of the British security service, whose identities were shielded from the defendants by a large screen.
During their evidence, it became known that Khyam was referred to as "All Together" while Shujah was called "Sportsbag".
The cell's alleged co-conspirator, Canadian Mohammed Momin Khawaja, was referred to as "Undue Haste".
The case continues on Wednesday.