The UK government has announced new measures to crackdown on Islamist extremism, drawn up following the brutal murder of a British soldier by two Muslim converts in May. Part of the plan is to block extremist material on the web and ban those encouraging extremism from visiting mosques. However, as RT's Laura Smith reports, it's the jails where converts are becoming increasingly radicalized.br br RT LIVE br Subscribe to RT! br Like us on Facebook Follow us on Twitter Follow us on Instagram Follow us on Google+ br RT (Russia Today) is a global news network broadcasting from Moscow and Washington studios. RT is the first news channel to break the 1 billion YouTube views benchmark.