Speaking for the first time since his release from prison for trying to bring Sharia Law to the streets of London, was Jordan Horner, who has taken the Islamic name Jamaal Uddin.
In December 2012, Horner was filmed at a protest alongside Michael Adebowale who, five months later, murdered soldier Lee Rigby in Woolwich.
He claimed he had converted other prisoners during his time in prison.
Mr Horner said to BBC Panorama:
He added that in less than a year he was transferred between three different jails in an effort to disrupt his activities.
Speaking to BBC Panorama Justice minister Jeremy Wright discussed the threat of Islamic radicalisation behind bars in Britain by saying they should be prevented from inflicting their extreme views on others:
There is a "significant risk" of Islamic radicalisation behind bars the head of the prison and probation service has told BBC Panorama.
Michael Spurr the chief executive of the National Offender Management Service of England and Wales (NOMS) told the programme:
"There is a significant risk, given the fact that we manage some very dangerous people.
"Our job is to minimise that risk becoming a reality - that somebody in prison becomes radicalised and commits a terrorist offence."
Over the last ten years the number of Muslims in prisons in England and Wales has doubled, with the figure reaching 11,729 in 2013.
There are about 100 al-Qaida-inspired Islamist terrorists behind bars.
A Muslim woman accused of witness intimidation has been told to remove her burka by a judge before entering a plea in his court in case she was an imposter.
The Judicial Office said the 21-year-old from east London had initially refused to remove her full veil and reveal her face at Blackfriars Crown Court.
But judge Peter Murphy said the court's pursuit of open justice trumped her religious beliefs.
He also turned down a request from the woman's barrister for a female member of the police or prison staff to confirm her identity from arrest pictures before she entered the court.
The case was adjourned until Sept 12, when he may hear legal argument about the issue.