Types of emergencies
There is an ongoing threat of terrorism against the United Kingdom. Members of the public should always remain alert to the danger of terrorism and report any suspicious activity to the police on 999 or the anti-terrorist hotline: 0800 789 321.
UK threat levels
The current threat level for international terrorism in the UK is Severe. The UK has been at this threat level since August 2014, with a brief raise to critical following the Manchester Arena attack in May 2017.
The current threat level for Northern Ireland-related terrorism in Britain is Substantial.
More information on threat levels can be found on the MI5 website.