# Protect Duty For Events: A Practical Guide To Martyn’s Law

> Plan safer events with OnePlan. Get practical guidance on Martyn's Law compliance, risk assessments, staff training, and protect duty checklists.

**Published:** 2026-09-24 | **Updated:** 2026-10-31 | **Author:** oneplansync
**URL:** https://www.oneplan.io/articles/protect-duty-event-safety
**Type:** post

**Categories:** Event safety and compliance

![Protect Duty For Events: A Practical Guide To Martyn’s Law](https://oneplan.sites.aigrowthagent.co/wp-content/uploads/sites/80/2026/09/1788789045514-b7efdc888ddb-1024x572.webp)

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## Content

*Written by: Paul Foster, Founder, CEO, OnePlan*

## Key Takeaways

- Martyn’s Law (Terrorism (Protection of Premises) Act 2025) creates a legal duty for UK event organizers to apply proportionate public-protection procedures at publicly accessible events.
- Events fall into two tiers. Standard Duty (200–799 people) requires four core procedures. Enhanced Duty (800+ people) adds written risk assessments, documented measures, a senior responsible individual, and SIA notification.
- The four mandatory procedures, evacuation, invacuation, lockdown, and communication, rely on accurate, to-scale site plans so staff can act quickly and confidently.
- Compliance comes from clear steps: tier assessment, risk evaluation, documented procedures, staff training, and coordination with police, fire, medical services, and the Safety Advisory Group.
- OnePlan provides a collaborative, to-scale planning platform that helps organizers document risk assessments, design the four key procedures, and coordinate with authorities in one single source of truth. [Book a demo today](https://www.oneplan.io/book-demo/?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent).

## How Martyn’s Law Applies To Events

[Martyn’s Law applies to publicly accessible premises and events across England, Wales, Scotland, and Northern Ireland](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance). It uses a two-tier system based on the number of individuals, including staff, reasonably expected to be present at the same time.

The [Security Industry Authority (SIA) is the designated regulator](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance). It issues compliance notices, restriction notices, and penalty notices. The implementation period runs at least 24 months from Royal Assent, with commencement expected around spring 2027.

| Tier | Capacity Threshold | Key Requirements |
| --- | --- | --- |
| [Standard Duty](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) | [200–799 people (including staff)](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) | [Four public protection procedures: evacuation, invacuation, lockdown, communication](https://protectuk.police.uk/martyns-law/enhanced-tier) |
| [Enhanced Duty](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) | [800+ people (including staff)](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) | [All standard requirements plus: written terrorism risk assessment, documented public protection measures, designated senior individual, notification to the SIA](https://protectuk.police.uk/martyns-law/enhanced-tier) |

Event organizers should check the [latest official statutory guidance on GOV.UK](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) and [ProtectUK](https://protectuk.police.uk/), because thresholds and requirements may change before commencement.

[Plan your next event the easy way. Get started free at oneplan.io, where your first event is on us, or book a 15-minute demo to see OnePlan in action.](https://www.oneplan.io/book-demo/?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent)

## The Four Key Procedures For Event Safety

[Both standard and enhanced tier premises must have appropriate, reasonably practicable public protection procedures in place](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) across four defined areas. An accurate, to-scale site plan underpins each procedure, because staff need to see routes, safe zones, and communication points.

![aerial shot of a coast filled with software-added event elements. On the left, there is an app menu (OnePlan)](https://cdn.aigrowthmarketer.co/1780508353774-e6397ee8616e.png)**Beach event planning example inside OnePlan: the base layer is a zoomable satellite or street map, and everything placed on it (tents, stages, crowd barriers, toilets, vehicles, staff, signage, routes) stays accurately to scale as you zoom**

1. **Evacuation:** [Move people out of the premises or event and away from danger.](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) For events, plan safe exit routes and designated assembly points at a safe distance. Account for attendees with mobility needs. [Terrorism evacuation differs from fire evacuation and uses the nearest safe exit while avoiding predictable muster points that could be targeted.](https://provarisk.co.uk/martyns-law/qa_12-what-are-public-protection-procedures) A to-scale site plan in OnePlan lets you map primary and secondary routes across the actual venue footprint before event day.
2. **Invacuation:** [Move people to a safer place within the premises or event when leaving is not the safer option.](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) [Many staff feel least familiar with invacuation, because it goes against the instinct that evacuation always provides the answer.](https://provarisk.co.uk/martyns-law/qa_12-what-are-public-protection-procedures) For an outdoor event, identify structures or areas that offer better protection if a threat emerges nearby. Mapping these safe zones on a to-scale plan makes decisions faster and clearer under pressure.
3. **Lockdown:** [Secure the premises or event to prevent individuals entering or leaving.](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) For events, control entry and exit points and use barriers. Set clear trigger phrases and authority levels for staff to initiate lockdown. [A robust lockdown procedure covers every entry point and specifies who triggers lockdown and the chain of substitution.](https://martynslawsoftware.co.uk/guide/the-four-procedures)
4. **Communication:** [Provide clear, rapid information to staff and attendees, alerting them to danger and giving instructions where it is safe to do so.](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) This includes internal staff channels such as radios and WhatsApp groups, and external messaging such as PA systems. [Communication often breaks under pressure because staff hesitate about authorisation or wording. Pre-agreed scripts and a named incident lead reduce hesitation.](https://provarisk.co.uk/martyns-law/qa_12-what-are-public-protection-procedures)

## Standard And Enhanced Duty: What You Must Deliver

[Standard duty requires reasonably practicable procedures](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance). These are proportionate actions that balance effectiveness with cost, time, and difficulty. Enhanced duty adds requirements for documented measures across four categories: [monitoring, movement, physical safety and security, and security of information](https://protectuk.police.uk/martyns-law/enhanced-tier).

| Requirement | Standard Duty (200–799) | Enhanced Duty (800+) |
| --- | --- | --- |
| Four key procedures | [Yes](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) | [Yes](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) |
| Written terrorism risk assessment | [Not required](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) | [Required](https://protectuk.police.uk/martyns-law/enhanced-tier) |
| Documented public protection measures | [No](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) | [Yes](https://protectuk.police.uk/martyns-law/enhanced-tier) |
| Designated senior individual | [No](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) | [Yes (for organisations)](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) |
| Notify Security Industry Authority | [Yes](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) | [Yes](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) |

Always verify your obligations against the [GOV.UK statutory guidance](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) and consult the [SIA](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025) for current requirements.

## How To Run A Terrorism Risk Assessment

A terrorism risk assessment identifies potential threats, assesses vulnerabilities in your event site, and records the mitigation measures you apply. [The Act assumes that a terrorist attack might occur anywhere, so requirements do not depend on the perceived likelihood of an attack at a specific premises. Responsible persons must consider appropriate and reasonably practicable procedures.](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance)

A practical risk assessment for an event site usually follows these steps.

1. **Identify your site’s vulnerabilities.** Consider crowd density at peak times, entry and exit point locations, sight lines, vehicle access routes, and areas where people gather. An accurate, to-scale plan provides the starting point.
2. **Assess the potential impact.** For each vulnerability, consider what could happen and how many people could be affected. Use your site plan to model crowd areas and identify pinch points.
3. **Apply proportionate mitigation measures.** [Reasonably practicable means weighing what can be done against the cost, time, and difficulty of implementation.](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) Measures might include barrier placement, CCTV coverage, bag search points, or vehicle security controls.
4. **Document everything.** [Enhanced tier events must provide a compliance document to the SIA, including an assessment of how measures reduce vulnerability and risk of harm.](https://protectuk.police.uk/martyns-law/enhanced-tier) Thorough documentation also supports standard-tier events.
5. **Review and update.** [Review procedures at least annually and after any significant change to your event, such as layout, capacity, or management changes.](https://martynslawsoftware.co.uk/guide/the-four-procedures)

OnePlan’s arrival and exit calculators let you outline any standing area on your to-scale site plan and instantly see its safe capacity. This makes it straightforward to model scenarios and show proportionate planning. The [Silverstone team](https://www.oneplan.io/case-studies/how-silverstone-planned-the-british-grand-prix-in-oneplan/?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent) uses OnePlan as its single source of truth across 50+ events a year, achieving a 13x ROI and a 10% reduction in planning days. The [Tour of Britain](https://www.oneplan.io/case-studies/how-the-tour-of-britain-was-planned-in-oneplan/?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent) reduced site visits by 75% and saved more than 300 hours a year by validating infrastructure remotely on accurate, to-scale plans.

![Festival planning example inside OnePlan: the base layer is a zoomable satellite or street map, and everything placed on it (tents, stages, crowd barriers, toilets, vehicles, staff, signage, routes) stays accurately to scale as you zoom](https://cdn.aigrowthmarketer.co/1780620510054-c5429587ebad.png)**Festival planning example inside OnePlan: the base layer is a zoomable satellite or street map, and everything placed on it (tents, stages, crowd barriers, toilets, vehicles, staff, signage, routes) stays accurately to scale as you zoom**

## Building Staff Training And Awareness

Home Office statutory guidance states there is no statutory requirement for a specific form of training. People responsible for carrying out a procedure must be made aware of it and their specific role, and be given the understanding, experience, and tools needed to act effectively. Practical methods include induction briefings, tabletop exercises, and walk-throughs.

Contractors and volunteers count as staff for Martyn’s Law training and preparation, so include them in role-based learning plans. [Free ACT Awareness e-learning is available through ProtectUK](https://protectuk.police.uk/martyns-law/resources) and supports general awareness across your team.

OnePlan’s visual, to-scale site plans act as a practical training asset. Staff can review evacuation routes, invacuation zones, lockdown points, and communication positions on the actual event map before an incident occurs. This turns a static briefing into a clear spatial understanding of the site.

![Workforce planning example inside OnePlan: the base layer is a zoomable satellite or street map, and everything placed on it (tents, stages, crowd barriers, toilets, vehicles, staff, signage, routes) stays accurately to scale as you zoom](https://cdn.aigrowthmarketer.co/1780620462793-34a56c1c38c8.png)**Workforce planning example inside OnePlan: the base layer is a zoomable satellite or street map, and everything placed on it (tents, stages, crowd barriers, toilets, vehicles, staff, signage, routes) stays accurately to scale as you zoom**

## Working With Authorities And Emergency Services

[Where multiple responsible persons exist for qualifying premises or events, they must coordinate with each other, so far as is reasonably practicable, to meet the Act’s requirements.](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) In the UK, the Safety Advisory Group (SAG) provides the main forum for event organizers to engage with local police, fire, medical services, and local authorities on public safety planning.

[The SIA’s Executive Director for Martyn’s Law has stated that emergency services will be important partners in building the picture of what is happening on the ground.](https://www.gov.uk/government/news/martyns-law-a-collective-effort) A clear, up-to-date site plan shared with these stakeholders supports effective coordination.

OnePlan enables real-time collaboration, so operations, security, medical, police, and fire teams work from the same single source of truth rather than separate, outdated files. Plans export to high-resolution formats suitable for SAG meetings and permitting submissions. The [Tour of Britain](https://www.oneplan.io/case-studies/how-the-tour-of-britain-was-planned-in-oneplan/?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent) shares self-serve visual plans with suppliers, partners, and authorities across all eight stages of the race, keeping everyone aligned from six months out to race day.

**Build your event as a team inside OnePlan: design and manage any physical space on one integrated, live plan**

[Book a 15-minute demo to see how OnePlan helps you coordinate with authorities on one live, to-scale plan.](https://www.oneplan.io/book-demo/?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent)

## Protect Duty Event Safety Checklist

- ☐ Confirm your tier (standard: 200–799 people including staff; enhanced: 800+ people including staff)
- ☐ Notify the Security Industry Authority (SIA) as the responsible person
- ☐ Conduct a terrorism risk assessment specific to your event site
- ☐ Develop procedures for evacuation, invacuation, lockdown, and communication
- ☐ Create a to-scale site plan showing routes, safe zones, and entry and exit points
- ☐ Train staff on procedures and their specific roles, including contractors and volunteers
- ☐ Coordinate with local police, fire, medical services, and the Safety Advisory Group (SAG)
- ☐ Document procedures, training records, risk assessments, and compliance documents
- ☐ Review and update procedures annually or after any significant change to your event

## Frequently Asked Questions About Protect Duty For Events

### What Are The Four P’s Of Preventing Terrorism?

The four P’s refer to the UK’s CONTEST counter-terrorism strategy: Prevent, Pursue, Protect, and Prepare. Martyn’s Law sits within the Protect strand, which aims to reduce the vulnerability of the UK to terrorist attacks, including at public venues and events. The Act places legal duties on those responsible for publicly accessible premises and events to have proportionate procedures in place, directly supporting the Protect objective.

### How Do I Know If My Event Falls Under Protect Duty?

Your event falls within scope if it is accessible to the public, entry includes checks for a ticket, pass, or membership, and it is reasonable to expect 800 or more people, including staff, to be present at the same time. Events meeting this threshold are subject to enhanced duty requirements. Premises where 200 to 799 people are reasonably expected at the same time fall under standard duty.

If your event meets the 800-person threshold at any point during its duration, it remains in scope for its entire duration. Always verify your specific circumstances against the official statutory guidance and consult the SIA.

### What Is The Difference Between Standard And Enhanced Duty?

Standard duty, for 200–799 people, requires four public protection procedures: evacuation, invacuation, lockdown, and communication. Enhanced duty, for 800+ people, adds a written terrorism risk assessment, documented public protection measures across four categories, a designated senior individual where the responsible person is an organisation, and notification to the Security Industry Authority. Both tiers require notification to the SIA.

### Do I Need A Written Risk Assessment?

A written terrorism risk assessment is mandatory only for enhanced duty events and premises with 800+ people. Standard-tier events still gain clear benefits from documenting procedures and risk assessments. Documentation shows that you have considered proportionate measures, supports coordination with authorities and the Safety Advisory Group, and provides a defensible record if the SIA requests information about your compliance approach.

### What Tools Can Help Me Plan For Protect Duty?

A to-scale, map-based planning platform such as OnePlan helps you create accurate site plans, model standing crowd capacities, document procedures visually, and share plans securely with authorities and stakeholders. OnePlan is used by venues like Silverstone, which achieved a 13x ROI planning the Formula 1 British Grand Prix and 50+ events a year, and events like the Tour of Britain, which reduced site visits by 75% and saved more than 300 hours annually.

Plans export to high-resolution formats for SAG meetings, permitting submissions, and staff training. The auto-generated Bill of Quantities turns your site plan into an accurate infrastructure inventory. OnePlan has powered more than 200,000 events across 150 countries, and your first event is free.

## Plan Your Next Event With Confidence

Martyn’s Law compliance becomes manageable when you take a practical, proportionate approach. The four key procedures, evacuation, invacuation, lockdown, and communication, form the foundation for every event within scope. Enhanced-tier events also require documented risk assessments and measures across monitoring, movement, physical security, and information security.

Early work on accurate, to-scale plans and coordination with authorities strengthens your compliance position ahead of the expected spring 2027 commencement date. OnePlan gives you a collaborative, to-scale planning platform to document risk assessments, design the four key procedures, and coordinate with police, fire, medical services, and the Safety Advisory Group in one single source of truth.

From a community festival to a major stadium event, OnePlan turns complex event site planning into a clear, visual process. [Plan your next event the easy way. Get started free at oneplan.io, where your first event is on us, or book a 15-minute demo to see OnePlan in action.](https://www.oneplan.io/book-demo/?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent)

## Read Next

- [How to Create an Event Safety Plan: A 7-Step Guide](https://oneplan.io/articles/create-event-safety-plan?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent)
- [Special Event Safety Plan Requirements Explained](https://oneplan.io/articles/safety-plan-requirements-special-events?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent)
- [How to Coordinate Event Plans with Police and Fire](https://oneplan.io/articles/coordinate-event-plans-police-fire?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent)
- [Event Safety Plan Template: Free 2026 Guide (Word + PDF)](https://oneplan.io/articles/event-safety-plan-template-2026?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent)
- [Event Safety Plan vs Security Plan: Key Differences](https://oneplan.io/articles/event-safety-plan-vs-security?utm_term=protect-duty-event-safety&utm_campaign=ai_growth_agent)

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  - **JobTitle:** Founder, CEO
  - **Description:** Paul Foster is the CEO and founder of OnePlan, a platform for event and venue planning, digital twins, and crowd management. With over 15 years of experience leading complex global projects across sport, music, culture, and major events, he helps organizers design safer, smarter, and more collaborative event operations.
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---

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## Citations

- [PowerPoint Alternatives for Emergency Access Maps](https://www.oneplan.io/articles/best-powerpoint-alternatives-emergency-maps)
- [Canva Alternatives for Emergency Access Planning Maps](https://www.oneplan.io/articles/best-canva-alternatives-emergency-maps)
- [Does Martyn’s Law Apply in the US? What Venues Face Instead](https://www.oneplan.io/articles/does-martyns-law-apply-us)
- [Martyn’s Law for Council Events: A Portfolio-Scoping Guide](https://www.oneplan.io/articles/martyns-law-city-council-events)
- [Martyn’s Law: The Evidence Playbook for UK Venues and Events](https://www.oneplan.io/articles/martyns-law-compliance-guide)

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