The prison holding terror offenders separately from other inmates
As the government promises major reforms to prisons in England and Wales in the Queen's Speech, an independent review of radicalisation in jails is due to be published.
The World at One has learned that, in preparing that review, British officials visited a prison in the Netherlands where terrorism offenders are held in a separate unit in an effort to stop them from radicalising other inmates.
Ministers are understood to be considering a similar set-up in the UK.
Reporter Chris Vallance went to see the terrorist wing at a Rotterdam prison to find out how the system works.