ISIS and al Qaeda present a “resurgent” threat to the United Kingdom, the head of the country’s domestic security service warned in a rare public intervention on Tuesday, as he outlined a changing landscape of terrorism that is increasingly relying on children and on the internet.

Ken McCallum says Russian intelligence agencies are also on a ‘sustained mission to generate mayhem on British and European streets’ with ‘arson, sabotage and more’

The risk presented by Islamic State terrorism and hostile states such as Iran and Russia has surged in the last year, the spy agency’s chief said.

Ken McCallum says Russian intelligence agencies are also on a ‘sustained mission to generate mayhem on British and European streets’ with ‘arson, sabotage and more’

In a speech delivered from the Counter Terrorism Operations Centre (CTOC) on Tuesday in London, MI5 Director General Ken McCallum warned that the UK is facing the most complex and interconnected

Nation-state actors are investing aggressively in advanced cyber operations to target government information and technology in a bid to sow "mayhem on British