Terrorist plots escalating to violence within days, says MI5 chief

There has been a "dramatic" jump in the scale and pace of the threat facing Britain.

Terrorist plots are escalating to the point of violence in a matter of days after a "dramatic" jump in the scale and pace of the threat facing Britain, the head of MI5 has warned.

Andrew Parker highlighted the "short life" of some attack plans as he described how the danger to the UK is now at the highest tempo seen at any point in his 34-year intelligence career.