Counter terrorism

National Threat Levels

Assessments of the level of threat from terrorism are made nationally by the Home Office. The 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

• Click here to find out the latest Home Office threat levels
• Click here to find out the latest M15 threat levels

The threat levels don’t require public action, but give an indication of the work that will be taking place by officers and staff behind the scenes.

If you suspect it, report it

Anti Terrorist Hotline 0800 789321

Alternatively, a confidential on-line form can be submitted (This service is managed by the Metropolitan Police).  If you believe there is an immediate threat because of a suspicious vehicle or package call 999.