The government made a number of changes to the terrorism threat level system in July 2019. This was in order to provide a single national threat level describing the threat to the UK, which includes Islamist, Northern Ireland, left-wing and right-wing terrorism.
As well as the incorporating additional threat sources there was also a review of the definitions of each threat level. This has resulted in some subtle changes.
What the threat levels mean
Threat levels are designed to give a broad indication of the likelihood of a terrorist attack.
LOW means an attack is highly unlikely
MODERATE means an attack is possible, but not likely
SUBSTANTIAL means an attack is likely
SEVERE means an attack is highly likely
CRITICAL means an attack is highly likely in the near future
Current Threat Levels
The threat to the UK (England, Wales, Scotland and Northern Ireland) from terrorism is SEVERE.
Current Northern Ireland-related terrorism threat level
The threat to Northern Ireland from Northern Ireland-related terrorism is SEVERE.
More information can be found on the Government website.