Martyn’s Law, officially the Terrorism (Protection of Premises) Act 2025, is UK-wide legislation designed to improve preparedness and protective security at certain publicly accessible premises and events.
The legislation was introduced following the Manchester Arena bombing in 2017, and is named in memory of Martyn Hett, one of the 22 people killed in the attack. Martyn’s mother, Figen Murray OBE, campaigned for many years after the bombing for the introduction of legislation that would improve security in public spaces.
Martyn’s Law will require those responsible for qualifying premises and events to take appropriate steps to reduce the risk of physical harm if a terrorist attack occurs. Larger premises and qualifying events will have additional duties aimed at reducing their vulnerability to an attack.
Who does Martyn’s Law apply to?
For qualifying premises, the requirements are split into two tiers:
Standard Tier
Premises where it is reasonably expected that between 200 and 799 people, including staff, may be present at the same time.
Enhanced Tier
Premises where 800 or more people, including staff, may reasonably be expected to be present at the same time. Qualifying events with 800 or more people can also fall within the enhanced requirements.
Examples of premises that may fall within scope include shops, restaurants, hotels, entertainment and leisure venues, visitor attractions, healthcare premises, places of worship and educational establishments.
There are some exceptions to the usual tier thresholds. For example, qualifying places of worship and childcare, primary, secondary and further education premises remain within the Standard Tier, even where 800 or more people may be present.
What will organisations need to do?
The exact requirements will depend on the type and size of the premises.
At Standard Tier, organisations will need to notify the Security Industry Authority (SIA) and have appropriate public protection procedures in place, so far as reasonably practicable.
These procedures cover:
- Evacuation
- Invacuation
- Lockdown
- Communicating with people on the premises
Enhanced Tier premises and qualifying events will have additional requirements, including considering appropriate public protection measures to reduce vulnerability and the risk of harm.
Does Martyn’s Law apply in Northern Ireland?
Yes. The Terrorism (Protection of Premises) Act applies across England, Wales, Scotland and Northern Ireland.
Preparing for Martyn’s Law
The substantive requirements of Martyn’s Law are not yet in force. This is expected to happen in April or May 2027. However, organisations that are likely to fall within scope should start preparing now.
Understanding whether your premises are likely to be affected, identifying who will be responsible, and reviewing your existing emergency procedures are sensible first steps.
Need help understanding how Martyn’s Law could affect your organisation? Get in touch with our team for further information and to enquire about our gap analysis assessment to help you get prepared.
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