What Is Martyn’s Law?

Martyn’s Law introduces a formal duty of care for premises and events where the public gather. It establishes a tiered framework based on the number of people expected onsite:

• Standard Tier: premises hosting 200–799 people

• Enhanced Tier: premises hosting 800+ people

Enhanced Tier sites must meet additional requirements, including appropriate security measures such as CCTV, bag searches and more detailed security planning. These sites must also register with the Security Industry Authority (SIA).

The law received Royal Assent on 3 April 2025, with an implementation period to allow venues time to prepare their systems, procedures and documentation.

Why Fire Detection and Security Systems Matter

While Martyn’s Law is centred on counter-terrorism preparedness, it is also a catalyst for strengthening and integrating all safety-critical systems. Fire detection and security technologies now play a more interconnected role in safeguarding the public.

CCTV & Surveillance

Enhanced-tier premises are expected to deploy appropriate monitoring solutions. CCTV serves as a deterrent, provides situational awareness, and supports real-time response during an incident.

Access Control & Barriers

Risk assessments may require updates to access control arrangements and physical security infrastructure. It is vital that these measures integrate seamlessly with fire exits, escape routes and evacuation strategies.

Fire Detection, Alarms & Communications

Fire safety systems—smoke detection, alarms, PAVA, and other communication platforms—must be considered as part of a unified emergency response plan. Integrated alerts can support safer decision-making in both evacuation and lockdown scenarios.

Staff Training & Procedures

Martyn’s Law mandates the creation of Public Protection Procedures, meaning staff must be competent in responding to a wide range of emergencies, guiding people to safety, and operating fire and security systems.

Risk & Vulnerability Assessments

Organisations must assess vulnerabilities relating not only to terrorism but also to fire and other security threats, and then implement proportionate mitigations.

Regulator Engagement

The SIA will oversee compliance for Enhanced Tier premises. This includes documented security plans and a clearly nominated responsible person.