We finally have statutory guidance regarding the implementation of the Terrorism (Protection of Premises) Act 2025 – commonly known as Martyn’s Law.

This marks a significant step forward, providing much-needed detail on how the new regime is expected to operate in practice. While the Act received Royal Assent in April 2025, its substantive requirements are not yet in force. The government has confirmed there will be an implementation period of at least 24 months, giving organisations time to prepare before enforcement begins.

What does the guidance clarify?

The statutory guidance reinforces several key points:

  • The Act applies to both premises and qualifying events, but with different thresholds and tests
  • A standard tier applies to premises where 200–799 people are expected at the same time
  • Enhanced tier requirements apply to larger premises and all qualifying events (800+ people, plus additional criteria)
  • The concept of ‘reasonably practicable’ measures is central, meaning proportionate, practical steps rather than a one-size-fits-all approach
  • The focus is on preparedness and harm reduction, not predicting where attacks will occur

It also provides further clarity on:

  • Who the responsible person is (based on control, not ownership)
  • The need for co-operation and co-ordination where responsibilities are shared
  • The types of procedures and measures expected under standard and enhanced duties

Why this matters now

Although the legal duties are not yet enforceable, the framework is now clear. For event organisers and venues, this is the point at which Martyn’s Law moves from something theoretical to something you can actively plan for.

Many of the expectations (such as clear evacuation procedures, staff awareness, and proportionate security measures) are already consistent with good practice. Organisations that start aligning now will be in a much stronger position when the regime comes into force.

Check whether it applies to your event

We’ve always been clear that this is not as straightforward a question as many online resources imply.

Our team has analysed the newly-released 180+ pages of guidance and updated our Knowledgebase article, which includes a practical ‘checker’ tool to help you navigate whether Martyn’s Law is likely to apply to your venue or event.

No need to log in, no paywall – just the information and analysis you need. 

Specialist: Katie Hodson

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Katie is an experienced Health and Safety consultant who began her career in the events industry. She also has extensive experience within the Motorsport industry.

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Article last updated on Apr 15th, 2026

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