Martyn's Law Manager | Serious Incident Manager

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How will it be enforced?

The Security Industry Authority (SIA) has been confirmed as the regulator for Martyn's Law. Their approach will be supportive and proportionate — advisory first, giving venues the opportunity to get it right before formal enforcement begins. The SIA has powers to inspect premises, issue compliance notices and levy financial penalties. Final SIA regulatory guidance will be published in autumn 2026, ahead of the spring 2027 commencement date.

Current threat level - Substantial

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What is Martyn’s Law?

The Terrorism (Protection of Premises) Act, known as Martyn's Law, will protect security and organisational preparedness across the UK by mandating, for the first time, those responsible for premises and events to consider the terrorist risk and how they would respond to an attack.

FAQs

What is Martyn’s Law?

Martyn’s Law, also known as the Protect Duty, is legislation in the United Kingdom aimed at enhancing public safety by requiring owners and operators of publicly accessible locations to take steps to protect people from terrorist attacks. It is named in honour of Martyn Hett, one of the victims of the 2017 Manchester Arena bombing.

Why was Martyn’s Law introduced?

Martyn’s Law was introduced in response to the growing threat of terrorism and to ensure that venues are better prepared to respond to such incidents. It aims to establish a consistent and effective approach to security across a variety of public spaces, helping to prevent future attacks and minimize their impact.

What types of locations are affected by Martyn’s Law?

The law applies to a wide range of publicly accessible locations, including but not limited to:

Concert halls and arenas
Shopping centres
Public squares and parks
Sports stadiums
Large entertainment venues

Essentially, any place where large numbers of people gather could potentially be targeted by terrorists.

What will be the key requirements of Martyn’s Law for venue operators?

Risk Assessment: Conducting thorough risk assessments to identify potential vulnerabilities and threats.

Mitigation Measures: Implementing appropriate and proportionate measures to reduce the risks identified, which may include physical security measures, staff training, and emergency response planning.

Training and Awareness: Ensuring that staff are adequately trained to recognize and respond to security threats.

Collaboration: Working with local authorities, emergency services, and other stakeholders to enhance overall security and preparedness.

Information Sharing: Sharing relevant security information and intelligence with appropriate authorities and other operators.

How will compliance with Martyn’s Law be monitored and enforced?

The Security Industry Authority (SIA) has been confirmed as the regulator for Martyn's Law. Their approach will be supportive and proportionate — advisory first, giving venues the opportunity to get it right before formal enforcement begins.

The SIA has powers to inspect premises, issue compliance notices and levy financial penalties. Final SIA regulatory guidance will be published in autumn 2026, ahead of the spring 2027 commencement date.

When is Martyn’s Law expected to come into effect?

Martyn's Law received Royal Assent on 3 April 2025 and is expected to come into force in spring 2027. The Government has confirmed a minimum 24-month implementation period. Venues should use this time to prepare — not wait.

What venues are included?

The Bill will require venues to fulfil necessary but proportionate steps according to their capacity to mitigate the impact of a terrorist attack and reduce harm. The premises' duties will depend on the size of the venue. Premises and events with a capacity of 800 or above will be in the Enhanced Tier, while premises with a capacity of 200 to 799 will be in the Standard Tier.