About Martyn’s Law – Martyn's Law Services

What Is Martyn's Law

Protecting People. Empowering Premises & Events. Honouring Martyn’s Legacy.

Martyn’s Law, officially known as The Terrorism (Protection of Premises) Act 2025, is named in memory of Martyn Hett, a victim of the 2017 Manchester Arena attack.

The legislation requires those responsible for certain UK premises and events to take steps to prepare for and respond to potential terrorist attacks.

Standard Tier Requirements

Applies to – Publicly accessible locations where 200-799 people may be present
Must implement reasonably practicable security measures and register with authorities to help protect the public from terrorist attacks
Simple procedures to reduce physical harm of individuals who may be present
Enhancing (developing, building upon further) existing security arrangements

Requirements – Appropriate, Reasonably Practicable and consider different types of terrorist attacks through the following public protection procedures:

Evacuation, Invacuation, Lockdown, Communication
People working at premises must be aware and ready to put into practice
Effectively communicated to employees/volunteers/contractors/persons hiring
Review annually
No physical alterations or purchase of equipment

ENHANCED Tier Requirements

Applies to – Premises or events where 800 people or more may be present
Must meet all standard tier duties plus the following additional requirements.

Requirements – Appropriate Public Protection measures and procedures through:

Evacuation, Invacuation, Lockdown, Communication
People working at premises must be aware and ready to put into practice
Effectively communicated to employees/volunteers/contractors/persons hiring
Review annually
No physical alterations or purchase of equipment
Documented security plan outlining public protection procedures
Nominated Responsible person or designated senior individual; where responsible person is not an individual.

Less than 200 people – Not Legally required to comply

If your venue has fewer than 200 people, proactive and safety conscious venues may choose to adopt standard tier procedures voluntarily to enhance public safety and preparedness.

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Who’s affected?

Any premises that may host 200 or more people falls under this legislation. There are two levels of requirements depending on capacity:

Standard Tier: 200–799 people,

Enhanced Tier: 800 or more people.

If your venue has fewer than 200 people, you may choose to adopt standard tier procedures voluntarily.

What’s required?

Premises and events must implement reasonably practicable public protection procedures/measures depending on the capacity of the premises or events, and are legally obliged to consider the risk of a terrorist attack to their premises or event and to take proportionate steps to protect the public.

It aims to improve preparedness and protections from terrorism, ensuring consistency of approach.

Premises need to implement reasonably practicable public protection procedures and or measures depending on capacity of premises/events.

They are legally obliged to consider the risk of a terrorist attack to their premises or events and take proportionate steps to protect the public.

Legislation Updates

April 2025 Legislation Received Royal Assent
24 month implementation period from April 2025. Allow premises time to adapt and prepare for new responsibilities
Statutory guidance will be published by the Home Office to help organisations understand and meet their obligations
No Legal Compliance at present not required yet but organisations are encouraged to begin preparations
Security Industry Authority (SIA) will over see compliance, offer guidance and support