Heres what this means
The current terrorism threat level is Critical
The threat level is Critical. An explanation of what this means in terms of a terrorist attack is set out below.
What are threat levels?
A new system has been created to keep the public informed about the level of threat to the UK from terrorism.
The system also helps the police and other law enforcement agencies determine how they should respond to, and prepare for a terrorist incident.
The threat levels are:
critical - an attack is expected imminently
severe - an attack is highly likely
substantial - an attack is a strong possibility
moderate - an attack is possible but not likely
low - an attack is unlikely
What should the public do?
You should always remain alert to the danger of terrorism and report any suspicious behaviour:
if you have information about terrorist activities contact the anti-terrorist hotline on 0800 789 321
call 999 if there is an immediate threat to life
if you know of a threat to national security email the Security Service.