18 March 2012, 21:04
The current threat level from international terrorism for the UK is assessed as SUBSTANTIAL.
The threat level for Northern Ireland-related terrorism is set separately for Northern Ireland and Great Britain. In Northern Ireland it is SEVERE and in Great Britain SUBSTANTIAL.
SEVERE means that a terrorist attack is highly likely; SUBSTANTIAL that an attack is a strong possibility.
https://www.mi5.gov.uk/output/threat-levels.html
The threat level for Northern Ireland-related terrorism is set separately for Northern Ireland and Great Britain. In Northern Ireland it is SEVERE and in Great Britain SUBSTANTIAL.
SEVERE means that a terrorist attack is highly likely; SUBSTANTIAL that an attack is a strong possibility.
https://www.mi5.gov.uk/output/threat-levels.html