Britain faces an increased threat of a nuclear attack by al-Qaeda terrorists following a rise in the trafficking of radiological material, a government report has warned.

Downing Street released an update to the National Security Strategy in which it stated that "the UK does face nuclear threats now" and added that there was "the possibility that nuclear weapons or nuclear material [could] fall into the hands of rogue states or terrorist groups
I see the sabers are being rattled again. Has anyone ever seen al-qaeda make an attack? I've seen NOTHING! How dangerous is this threat ? Why is it more dangerous now than it's ever been ? Other than our government declaring war on multiple countries! Still, it could be true especially after the terrible things we've apparently been doing in Iraq/Afghan.

Nuclear terror risk to Britain from al-Qaeda - Telegraph