Martyn's Law: what the new duty means for venues and events
The Terrorism (Protection of Premises) Act 2025 will require many UK venues and events to be ready for a terrorist attack. Here is who it affects and what it asks.
Martyn's Law is the name given to the Terrorism (Protection of Premises) Act 2025, which became law on 3 April 2025. It is named after Martyn Hett, one of the 22 people killed in the Manchester Arena attack in May 2017, and follows years of campaigning by his mother, Figen Murray.
The Act places new duties on those responsible for certain public premises and events, so that they are better prepared to keep people safe if an attack happens.
The standard tier covers premises where 200 to 799 people may be present at the same time. Those responsible must notify the regulator and have procedures their staff can follow in an attack, such as evacuating the premises, moving people to safer areas inside, locking down and keeping the public informed.
The enhanced tier covers premises where 800 or more people may be present, and certain public events of the same size. These must also put measures in place to reduce the risk and impact of an attack, such as monitoring and controlling entry points, keep documented plans, and appoint a designated senior individual when the responsible person is a company.
The Security Industry Authority (SIA) is the regulator, with powers to inspect premises and issue penalties. The government has said there will be an implementation period of at least 24 months, so the duties are not expected to apply before 2027.
In practice, many venues and events will rely on well-briefed security staff to carry out their procedures, from searching and entry control to guiding people to safety. Securial supplies SIA-licensed officers and stewards who work to your plans and procedures.
This article is general information, not legal advice. For the full requirements, read the official guidance from the Home Office and the SIA.