A video compilation of scenes from the 7/7 attacks on London, mixed with footage of beheadings of hostages, was discovered in the flat allegedly used by the 21/7 conspirators as their “bomb factory”, a court was told yesterday. The homemade tape was found during a ten-day search of the flat by police, it was alleged yesterday.

Newspapers carrying reports of the bombings on July 7, 2005, and the hunt for the 21/7 suspects were also said to have been found at the property on the ninth floor of a tower block in North London.

Woolwich Crown Court was told that the search also uncovered items allegedly used in making the devices detonated on 21/7 and a collection of radical Islamist videos, recordings, CD-Roms and literature. The flat, at Curtis House, New Southgate, was the home of Yassin Omar, the alleged Warren Street bomber, and was frequented by a number of the other defendants.

Dozens of empty hydrogen-peroxide bottles were found in the communal bins at the property. Rubber gloves with traces of TATP high explosive, rubber tubing, a roll of masking tape and the box for a set of electronic scales were also found.

Police raided the flat four days after July 21, 2005, when four explosive devices were detonated on the capital’s transport network.

The court was told that the property was secured by police on July 25, 2005, before being checked by an explosives officer. No one was there and entry had to be forced. The prosecution alleges that the 21/7 plotters had worked around the clock there to make the hydrogen-peroxide mixture that formed the main charge of their devices. Jurors were shown photographs of the flat, including one of “apparent corrosion” on the control panel on the cooker. Another showed the residue of a yellowy substance on a shelf.

In the flat, officers found boxes and bags full of peroxide bottles, a five-litre glass laboratory bottle and handwritten notes of a chemical experiment.

The search also uncovered the text of a speech by Osama bin Laden and a flyer for a demonstration held less than three weeks after 9/11 to show “solidarity for Muslims in Palestine and respect for the martyrs”.

In the bedroom officers found a leaflet advertising a “Stop Musharraf” demonstration in 2004, which criticised the Pakistani President for “declaring war on Islam by siding with America’s war on terror”.

Nigel Sweeney, QC, for the prosecution, said that a video tape, entitled Religion is Sincerity, which “discussed the hatred of Shiite Muslims, Hindus, Russians and Jews”, was found on the floor. In the living room, Mr Sweeney said, was a double VHS cassette box entitled Caravan of Martyrs.

One video was called Islam — The Only Solution to World Peace and another included “speeches made by Osama bin Laden and images of a suicide bomber attacking the US barracks in Saudi Arabia”.

The CD-Roms allegedly included a course on jihad and the last messages of the 9/11 hijackers. Officers seized a recording of a speech by Abu Hamza al-Masri.

Mr Sweeney said: “This was a sermon . . . in the course of which he suggests that suicide bombing should not be seen as suicide but rather as martyrdom.”

Mr Omar, 26, Muktah Said Ibrahim, 29, Manfo Kwaku Asiedu, 33, Ramzi Mohammed, 25, Hussein Osman, 28 and Adel Yahya, 24, deny charges of conspiracy to murder and conspiracy to cause explosions.

The hearing continues.

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