The Secretary of State for the Home Department (Mrs Theresa May)
Today the Security Service reduced the threat level to Great Britain from Northern Ireland-related terrorism from substantial to moderate. This means that a terrorist attack is possible, but not likely.
The threat level to the UK from international terrorism remains at substantial, which means that an attack is a strong possibility. The threat level to Northern Ireland from Northern Ireland-related terrorism remains at severe, meaning that an attack is highly likely. Neither of these two levels has changed.
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.
The decision to change this threat level is taken by the Security Service independently of Ministers and is based on the very latest intelligence, considering factors such as capability, intent and time scale. Threat levels are kept under constant review.