London [UK], November 4 (ANI): The Joint Terrorism Analysis Centre (JTAC), an MI5-affiliated intelligence office responsible for the assessment of UK terror threat levels, raised it to "severe" from "substantial" nationwide.
London [U.K.] Sept 16 (ANI): British Prime Minister Theresa May on Friday raised the threat level from severe to critical after an explosion on a Tube train in south-west London in the morning.