Umran Javed, 33, was one of four men jailed for taking part in a protest outside the Danish embassy against cartoons depicting the prophet Mohammed.
He was sentenced to six years for soliciting murder and inciting racial hatred in July 2007 after he shouted “Bomb bomb USA” and “Bomb bomb Denmark”.
His fellow extremists called for a repeat of the July 7 terror attacks on London and vowed to see British troops in Iraq “coming home in body bags”.
Javed, a website designer, was still on licence when he was arrested at his home in Derby on March 8 this year.
Police found a book titled Zaad-e-Mujahid: The essential provision of the Mujahid and a document called Incitement of the Mujahideen in Reviving the Tradition of Assassinations on a portable hard drive. Another copy of the Zaad-e-Mujahid was found on a laptop.
Yesterday, Javed appeared at the Old Bailey and pleaded guilty to three charges of possessing a document likely to be useful to a terrorist.
He denied a fourth charge of the same offence relating to a document called 39 Ways to Serve and Participate in Jihad found on the laptop. It was due to be ordered to lie on file.
Following the hearing, a spokeswoman for Derbyshire police said: “This is part of our ongoing work to combat terrorism.”
Derby City Councillor Fareed Hussain said that ordinary members of the Muslim community were against “extremist action, thinking or philosophy”.
He said: “They believe in respecting people’s rights and the lives and liberty of other people. They want to live side by side with people from other faiths and other cultures.”
A court order bans the publication of Javed’s address in Derby. At the time of his previous conviction he was living in Washwood Heath Road, Birmingham.
During the trial in 2007, jurors were told Javed and his friends Mohammed Mizanur Rahman, 24, Abdul Muhid, 25, and Abdul Saleem, 32, acted as “cheerleaders for terrorism”. They organised the march after caricatures of the prophet Mohammed in a Danish newspaper were reprinted in France, Germany, the Netherlands, Italy and Spain.
The Common Serjeant of London, Judge Brian Barker QC told the protesters they were responsible for a “barrage of hatred and intolerance”.
Javed led a series of mob chants including “Denmark, you will pay with your blood, with your blood”.
It was claimed he had links with an extremist Muslim group which calls for an Islamic state in Britain. After his arrest, dozens of radical leaflets were found in his home as well as £2,000 in cash.
Javed was yesterday remanded in custody until sentence.