The four men are due to be sentenced at Woolwich Crown Court

Muktar Ibrahim, 29, Yassin Omar, 26, Ramzi Mohammed, 25, and Hussain Osman, 28, were found guilty on Monday.

Deputy Assistant Commissioner Peter Clarke said the four were "dedicated terrorists" who tried to repeat 7/7.

The jury failed to reach a verdict on Adel Yahya, 24, and Manfo Kwaku Asiedu, 34, and they will discover on Wednesday if they face a retrial.

Woolwich Crown Court heard how the four men found guilty of conspiracy to murder had brought chaos to London following their attempt to bomb London Underground trains and a bus on 21 July 2005 - a fortnight on from the attack which claimed 52 lives.

Despite the carnage of 7 July, on 21 July the public responded courageously

DAC Peter Clarke

Mr Clarke, head of the Metropolitan Police's Counter-Terrorism Command and National Co-ordinator of Terrorist Investigations, said the four had told "ridiculous lies" to escape justice.

He added: "These men obviously set out to replicate the horrors that had been inflicted on Londoners on 7 July 2005.

"But no one will forget the impact or the consequences of what they did - coming just two weeks after 52 innocent people had been murdered by other terrorists.

"Despite the carnage of 7 July, on 21 July the public responded courageously, and without thought for their own safety.

He singled out off-duty firefighter Angus Campbell, 43, who confronted Mohammed when his bomb failed to go off on board a crowded London Underground train, for his "incredible courage".

Mr Yahya (left) and Mr Asiedu may face a retrial

Mr Justice Fulford, the trial judge, said he would sentence the guilty men after hearing mitigation from their lawyers.

He said the two remaining defendants would remain in custody for the time being. A decision as to whether Asiedu and Yahya will face a retrial is expected to be made on Wednesday.

Mr Asiedu, of no fixed address, was accused of being the "fifth" bomber who dumped his device near Little Wormwood Scrubs on July 21 after losing his nerve. He insisted the bombs were real, but that he was duped.

The prosecution claimed Mr Yahya of High Road, Tottenham, north London, was part of the "inner circle" of bombers. But Mr Yahya denied all knowledge of the conspiracy.

Following the four guilty verdicts, questions were raised about the role of anti-terror police and the security services in the case.

The shadow home secretary, David Davis, said systemic failings allowed Muktar Ibrahim to attend a jihadi training camp in Pakistan while on bail in the UK.