The Mayor of London today attacked the Prime Minister and government over radicalisation in prisons, claiming they were "utterly clueless as to what to do about the problem".

Sadiq Khan said that yesterday's revelations that Belmarsh prison was "like a training camp for extremists" were "deeply worrying but should not come as a surprise".

"What is heartbreaking is that warnings about rising extremism in our jails were made by the Chief Inspector of Prisons as far back as 2010 — only to be ignored for six years," he said.

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