Anjem Choudary‘s videos were accessible on YouTube. He would spout anti-western doctrines while taking care not to cross the line into criminality

Followers of Britain’s most prolific radical preacher are spreading hatred and Islamist doctrines freely across the internet despite his conviction.

Scores of extremist videos by Anjem Choudary’s acolytes were available for anyone to view using Google and YouTube searches yesterday, days after the revelation that he was behind bars for encouraging support of Islamic State.

They include calls to arms to fight the kuffar, or non-believers; the glorification of Isis atrocities; acclaim for Hitler’s genocide of Jews; and demands for a world governed by Sharia.

Choudary, 49, was found guilty of terrorism offences after two decades spent mocking British efforts to bring him to justice. He had appeared on news programmes worldwide spouting anti-western doctrines while taking care not to cross the line into criminality.