A terrorist who plotted to kill hundreds of Londoners in a bomb attack has been freed from prison after only serving half his sentence. 

Manfo Asiedu, who was arrested after the failed London bombings in 2005, was jailed for 33 years in 2007 after admitting conspiracy to cause explosions.

The attempted atrocity came two weeks after 52 people were killed in the capital's 7/7 suicide bombings. 

On the day of the bombing, July 21 2005, four devices on trains and a bus around London failed to detonate, instead fizzing and popping. 

The home-made bombs failed to go off only because of mistakes calculating the ratios of the deadly ingredients. 

The defendants at the subsequent trial argued they never intended them to go off, and were merely intended to be fake suicide attempts as a protest against the Iraq invasion. 

Ghanaian-born Asiedu, now 53, arrived in the UK on a fake passport in December 2003.

He admitted purchasing all of the hydrogen peroxide used in the attempted bombings, but said he refused to take part in the attacks. Instead dumped his bomb in a West London park.

The Sun has now reported he was released earlier this year and deported back to Ghana on tax-payer money.

However, it remains unclear if he agreed to the deportation in return for cash under the Facilitated Returns Scheme.

Tory MP Mark Francois said: 'Given the number murdered on 7/7, it's obscene that anyone involved in a similar plot should be released early, whether subsequently deported or not.

'This is a truly awful decision.' 

Four of the men were jailed for life at Woolwich Crown Court after being convicted of conspiracy to murder. 

Muktar Said Ibrahim, Ramzi Mohammed, Yassin Omar and Hussain Osman were told they would serve a minimum of 40 years in prison. 

The Ministry of Justice has been approached for comment.