If you manage a school, run activities at a village hall, manage an office building, or organise community events, you may have heard about new UK legislation surrounding public security. Formally introduced as the Terrorism (Protection of Premises) Act, this historic framework is widely known as Martyn’s Law in memory of Martyn Hett, who lost his life in the 2017 Manchester Arena attack.
The goal of the law is straightforward: to ensure public premises and events are properly prepared to protect visitors and staff in the unlikely event of a terrorist incident.
However, many organisation leads are left asking one core question: when does Martyn’s Law apply to my premises or event?
At Universal Fire and Security Solutions, we help businesses and community leaders navigate public safety mandates seamlessly. Below, we break down the capacity thresholds, who is responsible, and how your site can achieve full compliance.

The Core Rule: When Does Martyn’s Law Apply?
Under official Home Office guidance, Martyn’s Law applies whenever a public building, venue, or event meets specific criteria based on capacity, access, and usage.
The law establishes a tiered structure so that smaller venues do not face the same regulatory burdens as massive stadiums.
1. The Standard Tier (200 – 799 People)
Premises fall into the Standard Tier if:
- They are wholly or mainly used for qualifying public activities (such as education, worship, assembly, retail, or entertainment).
- It is reasonable to expect that 200 or more individuals may be present at the same time.
Requirements for Standard Tier: Responsibility at this tier centres on organisational readiness. You are required to:
- Register/notify your premises with the Security Industry Authority (SIA).
- Put in place simple, practical Public Protection Procedures (e.g., plans for evacuation, invacuation, lockdown, and emergency communication).
2. The Enhanced Tier (800+ People)
Premises or managed public events fall into the Enhanced Tier if:
- It is reasonable to expect that 800 or more individuals may be present on-site at the same time.
Requirements for Enhanced Tier: In addition to notification and public protection procedures, Enhanced Tier venues must implement Public Protection Measures. This includes carrying out formal risk evaluations and installing physical or electronic security measures to reduce vulnerability to attacks.
How Martyn’s Law Applies to Your Sector
Because everyday operational needs differ by organisation, understanding your specific sector context is essential:

School Administrators & Educational Facilities
- When it applies: Primary and secondary schools, colleges, and nurseries are generally classed as Standard Tier premises if total staff and pupil occupancy exceeds 200 people.
- What you need to do: Schools must ensure their emergency plan goes beyond fire evacuation. You must have lockdown protocols (invacuation) and rapid communication procedures to alert staff and pupils if a threat arises near school grounds or within the school car park.
Village Halls & Places of Worship
- When it applies: Village halls, community centres, churches, mosques, and synagogues are within scope if their maximum capacity allows 200 or more people during major services, weddings, or community gatherings.
- What you need to do: Volunteers and staff must know what to do if an incident occurs. Simple steps—such as locking doors, directing people to secure spaces, and using reliable communication tools—form the core of compliance.
Office Workers & Commercial Building Managers
- When it applies: Multi-tenant commercial office buildings or industrial parks fall under the scope if public-facing areas or total shared occupant capacity routinely reaches 200+ people.
- What you need to do: The person or entity in control of the building must coordinate procedures across all tenants, ensuring integrated access control and evacuation routes.
Event Planners & Temporary Venues
- When it applies: Martyn’s Law specifically includes qualifying events held on land (including outdoor parks, green spaces, or temporary structures) where 800 or more people attend simultaneously.
- What you need to do: Event organisers must notify the SIA, conduct a safety risk assessment, and implement crowd management and entry security measures.
Practical Security Solutions for Martyn’s Law Compliance
Compliance with Martyn’s Law is not designed to be overly burdensome, but it does require clear, actionable emergency procedures. At Universal Fire and Security Solutions, we recommend four key steps to safeguard your facility:
1. Robust Access Control & Lockdown Systems
During a security incident, your first priority is controlling movement. Upgrading your building’s entryways with commercial access control systems allows staff to trigger a physical lockdown at the push of a button or via a mobile app, preventing unauthorised entry instantly.
2. High-Definition CCTV Surveillance
Real-time visibility is vital during an emergency. Our modern commercial CCTV installations give site managers continuous visual monitoring of perimeters, entrances, and assembly points, allowing rapid decision-making when implementing evacuation or invacuation plans.
3. Unified Fire & Emergency Notification Networks
A quick notification can save lives. Integrating intruder and threat alarms alongside certified fire alarm and detection systems ensures clear, unambiguous voice messaging or alarm tones alert occupants whether they need to evacuate (in a fire) or invacuate (during an external threat).
Standard Tier vs. Enhanced Tier Summary
| Requirement | Standard Tier (200 – 799 People) | Enhanced Tier (800+ People) |
| SIA Notification | Required | Required |
| Evacuation / Invacuation Plans | Required | Required |
| Lockdown & Communication Protocols | Required | Required |
| Documented Risk Assessment | Recommended | Statutory Requirement |
| Physical Security Measures | Optional / As needed | Statutory Requirement |
| Enforcement Oversight | SIA Inspection | SIA Inspection & Sanctions |
How Universal Fire and Security Solutions Can Help
Navigating new legislation can feel daunting, but you do not have to handle it alone. Universal Fire and Security Solutions brings decades of practical experience helping commercial premises, schools, and public venues meet UK safety standards.
We offer end-to-end security audits:
- Site Vulnerability Assessments: Pinpointing gaps in access points and security perimeters.
- System Integration: Linking fire, access control, and CCTV systems into a unified emergency response setup.
- Staff Training Support: Ensuring your team knows exactly how to activate lockdown protocols under pressure.
Ready to Ensure Martyn’s Law Compliance for Your Premises?
Whether you manage a primary school, oversee a community hall, or organise large-scale events, securing your facility under Martyn’s Law starts with a professional assessment.
Contact Universal Fire and Security Solutions today:
- Explore Our Services: Visit Universal Fire and Security Solutions to learn more about integrated security technology.
- Request a Security Audit: Get in touch through our Contact Page to schedule an on-site evaluation with an accredited engineer.
- Speak directly with an Expert: Call our team today to discuss lockdown systems, access control, and threat response measures for your venue.

