Current threat level
The current terrorism threat level is Severe
This means that a terrorist attack is highly likely.
What are threat levels?
The system of threat levels has been created to keep you informed about the level of threat the UK faces from terrorism at any given time. This system helps police and other law enforcement agencies decide how to allocate staff. The threat level represents the likelihood of an attack in the near future.
The threat levels
There are five levels of threat:
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
Who decides the threat levels?
The Security Service (MI5) (new window) and the Joint Terrorism Analysis Centre (JTAC) (new window) work together to set the UK's threat level.
To do this, they consider information gathered through intelligence in the UK and abroad. They also consider how terrorist organisations have behaved in the past.
In some cases, counter-terrorism officials have to use their best judgement when deciding just how close a terrorist group might be to staging an attack. Threat levels do not have an expiry date, and can be revised at any time as the information available to security agents changes.
What should you do?
You should always remain alert to the danger of terrorism, look out for suspicious bags on public transport or any other potential signs of terrorist activity you may encounter.
But you should not let the fear of terrorism stop you from going about your day-to-day life as normal. Your risk of being caught up in a terrorist attack is very low.
The threat levels abroad
For information on the threats abroad, travellers or British nationals overseas should consult the Foreign & Commonwealth Office (new window) website for country-specific advice.