Threats and Advice

Building viewed across river

Threat Levels

The majority of our work is secret: that’s how we can stay ahead of our adversaries to keep the country safe. Where necessary, we share information in order to inform the public about the threats the UK faces, and what they can do about them. 

The Joint Terrorism Analysis Centre (JTAC) sets the UK’s national terrorism threat level and MI5 sets the threat level for Northern Ireland-related terrorism in Northern Ireland. 

Ken McCallum giving speech

Threat updates

From time to time, the Director General of MI5 will provide a public update on the national security threats facing the UK. 

NPSA logo

Protective Security Advice

A fundamental part of the work of MI5 is using our intelligence to inform expert protective security advice. The National Protective Security Authority is part of MI5 and offers advice, guidance and training on physical and personnel security, to a whole host of organisations. 

Planes at an airport

Travel advice

The Foreign Commonwealth and Development Office provide travel advice for countries around the world, which includes information about the threat posed by terrorism.