This means that a terrorist attack is highly likely.
The current threat level for Northern Ireland-related terrorism is SEVERE in Northern Ireland (an attack is highly likely) and MODERATE in Great Britain (an attack is possible, but not likely).
For more information, see Threat levels.
The National Counter Terrorism Security Office (NaCTSO) The National Counter Terrorism Security Office (NaCTSO) is a police unit that supports the 'protect and prepare' strands of the government’s counter terrorism strategy.
We provide the help, advice and guidance to government and industry to protect from terrorist threat:
- crowded places throughout the UK
- hazardous sites and dangerous substances
- the critical national infrastructure (working with the Centre for Protection of National Infrastructure (CPNI)