By Richard Spillett for MailOnline
Published: 11:03 GMT, 1 March 2018 | Updated: 11:03 GMT, 1 March 2018
MI5 has reduced the threat level to Great Britain from Northern Ireland-related terrorism from substantial to moderate.
The security agency downgraded its threat level to the second-lowest level, which means an attack is possible but not likely.
Announcing the change in a written statement to Parliament, Home Secretary Amber Rudd said: 'Despite the change which has been made today, there remains a real and serious threat against the United Kingdom from terrorism and I would ask the public to remain vigilant and to report any suspicious activity to the police regardless of the threat level.'
British security services