'Hoax' attempt

The four men, Muslims of African origin, had tried to set off homemade bombs on three underground trains and a bus but the explosives had failed to detonate.

They had claimed that the bombings were a hoax designed as a protest against the war in Iraq.

Asiedu, who admitted he had dumped a fifth bomb in a park in north London, broke ranks with his co-accused during the trial, saying the plot was genuine but he had been duped into taking part.

Yahya, who had left the country six weeks before the failed attacks, denied having any knowledge of the plot.