The Secretary of State for the Home Department (Mrs Theresa May)
The Security Service, MI5, has increased the threat level to Great Britain from Northern Ireland-related terrorism from moderate to substantial. This means that a terrorist attack is a strong possibility and reflects the continuing threat from dissident republican activity.
As a result of this change, we are working closely with the police and other relevant authorities to ensure appropriate security measures are in place.
The threat level to the UK from international terrorism remains unchanged at severe, which means that an attack is highly likely. The threat level to Northern Ireland from Northern Ireland-related terrorism also remains unchanged at severe.
The public should remain vigilant and report any suspicious activity to the police.
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