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ARTICLE · 13 NOVEMBER 2026

Martyn's Law: Prepare Now For Implementation In Spring 2027

Travers Smith LLP
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The Terrorism (Protection of Premises) Act 2025, known as Martyn's Law, introduces new security obligations for customer-facing premises and events across the UK. Understanding which tier applies to your premises, who bears responsibility, and what compliance measures are required will be critical for landlords, tenants, and facility managers as the Spring 2027 implementation date approaches.

United KingdomReal Estate and Construction
Emma Pereira
Emma Pereira
Sarah Walker
Sarah Walker
Alex Millar
Alex Millar
Gareth Wynne
Gareth Wynne
Richard Brown
Richard Brown
Jonathan Rush
Jonathan Rush
Sarah Quy
Sarah Quy
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The Terrorism (Protection of Premises) Act 2025 (often referred to as "Martyn's Law") will require those responsible for certain premises and events to take steps to prepare for potential terrorist attacks and help keep people safe if an attack were to take place. In addition, certain larger premises and events are required to consider their vulnerability to acts of terrorism, and, where appropriate, take reasonably practicable steps to reduce those vulnerabilities.

In brief

  • many customer-facing premises and events will be in scope of Martyn's Law;
  • the key thresholds are 200+ members of the public for the standard tier and 800+ for the enhanced tier;
  • responsibility follows control, not preference; and

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The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

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