# Protect Duty Compliance Requirements: Guide to Martyn’s Law

> Understand Martyn's Law requirements for your venue or event. OnePlan helps you meet Protect Duty compliance with confidence. Start preparing today.

**Published:** 2026-09-27 | **Updated:** 2026-10-31 | **Author:** oneplansync
**URL:** https://www.oneplan.io/articles/protect-duty-compliance-requirements
**Type:** post

**Categories:** Event safety and compliance

![Protect Duty Compliance Requirements: Guide to Martyn’s Law](https://oneplan.sites.aigrowthagent.co/wp-content/uploads/sites/80/2026/09/1788789088768-53f518a9c6aa-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 venue operators and event organizers to prepare for potential terrorist attacks, with implementation expected no earlier than April 2027.
- Premises fall into two tiers: Standard (200–799 people) requiring basic procedures and training, and Enhanced (800+ people) requiring formal risk assessments, written security plans, and a named senior lead.
- Standard tier obligations focus on terrorism evaluations, public protection procedures such as evacuation and lockdown, staff training, and SIA notification without mandatory physical security measures.
- Enhanced tier requirements add documented risk assessments, written security plans, consideration of physical security measures, and a named senior lead, with all obligations subject to regular review.
- Start preparing now during the implementation period and use [OnePlan’s visual planning platform](https://www.oneplan.io/book-demo/?utm_term=protect-duty-compliance-requirements&utm_campaign=ai_growth_agent) to document layouts, crowd flow, and security measures for Protect Duty compliance.

## What Is the Protect Duty?

Protect Duty, formally the [Terrorism (Protection of Premises) Act 2025](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance), creates a legal duty for those responsible for certain publicly accessible premises and events to prepare for potential terrorist attacks. It builds on the Protect and Prepare strands of the UK Government’s [CONTEST counter-terrorism strategy](https://www.protectuk.police.uk/martyns-law/martyns-law-overview-and-what-you-need-know).

The Act received Royal Assent on 3 April 2025 but is not yet in force. [The Home Office has confirmed an implementation period of at least 24 months](https://www.gov.uk/government/news/sia-launches-consultation-on-section-12-guidance-for-martyns-law), meaning the substantive requirements will not commence before April 2027. The Home Office [published statutory guidance on 15 April 2026, corrected 6 August 2026](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance), to help organizations understand their obligations. Preparation now is essential, and this implementation period is your window.

[See how OnePlan can document your Protect Duty compliance and book a free demo.](https://www.oneplan.io/book-demo/?utm_term=protect-duty-compliance-requirements&utm_campaign=ai_growth_agent)

## Scope and Tiers: How Martyn’s Law Applies to You

The Act applies across England, Wales, Scotland, and Northern Ireland to [premises wholly or mainly used for one or more of 17 Schedule 1 uses](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance), including shops, food and drink, entertainment and leisure, sports grounds, visitor attractions, hotels, and public authorities where the public can access. The duty falls on the “responsible person”, meaning the individual or organization with control of the premises.

| Tier | Capacity Threshold | Example Premises | Key Obligations |
| --- | --- | --- | --- |
| Standard | [200–799 people at the same time](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) | Restaurants, small venues, shops, places of worship | Public protection procedures, staff training, notification to SIA |
| Enhanced | [800+ people at the same time](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) | Stadiums, arenas, large festivals, shopping centers | Everything in Standard plus risk assessment, written security plan, named senior lead |

[Premises whose principal use is childcare, education, or a place of worship are placed in the Standard tier even if 800 or more people may be present.](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) Qualifying events, meaning those with 800 or more people present and entry subject to checks, are subject to Enhanced tier requirements. [Certain premises are excluded, including legislatures, open-access parks and gardens without access restrictions, and transport premises already subject to relevant security requirements.](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance)

## Standard Tier Requirements

[Standard tier requirements focus on simple, low-cost activities that help staff reduce harm and save lives in the event of an attack.](https://www.protectuk.police.uk/martyns-law/martyns-law-overview-and-what-you-need-know) Physical security measures are not required at this tier.

Standard tier obligations follow a clear sequence. You start with a terrorism evaluation to understand your vulnerabilities. That evaluation informs your public protection procedures, which then shape staff training and your notification to the SIA.

1. **Conduct a terrorism evaluation:** Assess how a terrorist attack could affect your premises and what procedures would reduce physical harm.
2. **Implement public protection procedures:** [Put in place evacuation, invacuation (sheltering in place), lockdown, and communication procedures.](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance)
3. **Train your staff:** Ensure staff complete counter-terrorism awareness training, such as ACT Awareness through [ProtectUK](https://www.protectuk.police.uk/martyns-law/martyns-law-overview-and-what-you-need-know), and understand your procedures.
4. **Notify the SIA:** [Register your premises with the Security Industry Authority once the notification requirement commences.](https://www.gov.uk/government/publications/terrorism-protection-of-premises-act-2025-notification-requirement/terrorism-protection-of-premises-act-2025-notification-requirement-accessible)

The [“reasonably practicable” principle means proportionate](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance). You weigh the cost, time, and difficulty of implementing procedures against the objective of reducing physical harm from terrorism. The Home Office guidance states that [compliance should not require specialist consultancy services.](https://www.gov.uk/government/news/martyns-law-guidance-published-to-help-businesses)

## Enhanced Tier Requirements

[Enhanced tier premises and qualifying events must meet additional requirements beyond those of the Standard tier, and organizations must review these obligations regularly.](https://www.protectuk.police.uk/martyns-law/martyns-law-overview-and-what-you-need-know) The additional obligations are:

- **Terrorism risk assessment:** A formal, documented assessment evaluating the threat of terrorist attacks and your premises’ vulnerabilities.
- **Written security plan:** [A documented plan setting out your public protection procedures and measures, which you must provide to the SIA upon request.](https://www.protectuk.police.uk/martyns-law/martyns-law-overview-and-what-you-need-know)
- **Public protection measures:** [In addition to procedures, you must consider measures in four areas: monitoring, movement, physical safety and security, and security of information.](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) This may include [CCTV, bag search policies, or vehicle checks where appropriate.](https://www.gov.uk/government/news/martyns-law-guidance-published-to-help-businesses)
- **Named senior lead:** [Appoint a named senior individual responsible for compliance, creating clear leadership accountability.](https://www.protectuk.police.uk/martyns-law/martyns-law-overview-and-what-you-need-know)
- **Notification to SIA:** Register your premises or event with the regulator.

Failure to meet these obligations triggers enforcement by the Security Industry Authority, which acts as the regulator for the Act.

## Enforcement and Penalties

[The Security Industry Authority (SIA) will be the regulator responsible for enforcing the Act and will take a supportive, proportionate, and risk-based approach.](https://www.gov.uk/government/news/sia-launches-consultation-on-section-12-guidance-for-martyns-law) Its enforcement powers include:

- **Compliance notices:** Requiring specific actions within a set timeframe.
- **Restriction notices:** Restricting how a venue or event operates in cases of serious non-compliance, potentially limiting capacity or stopping activities.
- **Monetary penalties:** Up to £10,000 for Standard tier breaches, and up to £18 million or 5% of worldwide turnover, whichever is greater, for Enhanced tier breaches.
- **Daily penalties:** Up to £50,000 per day for ongoing non-compliance.

[The enforcement regime is primarily civil.](https://dlapiper.com/en-us/insights/blogs/environment-health-safety-and-product-compliance/2026/two-major-developments-for-the-implementation-of-martyns-law) However, [ignoring SIA compliance or restriction notices is a criminal offence that can lead to court action.](https://united-outcomes.com/insights/martyns-law/preparing-your-budgets-for-martyns-law)

## Current Status and Timeline: What You Need to Know

The Act’s journey from Royal Assent to full commencement spans several milestones. The table below summarizes the key dates you need to track.

| Date | Milestone |
| --- | --- |
| 3 April 2025 | [Royal Assent](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) |
| 10 April 2026 | [Section 27 (guidance) commenced](https://legislation.gov.uk/uksi/2026/320/made) |
| 15 April 2026 | [Home Office statutory guidance published](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance) |
| 15 June 2026 | [SIA guidance provisions commenced](https://legislation.gov.uk/uksi/2026/622/made) |
| Expected no earlier than April 2027 | [Substantive requirements commence (at least 24 months after Royal Assent)](https://www.gov.uk/government/news/sia-launches-consultation-on-section-12-guidance-for-martyns-law) |

[The exact commencement date will be announced via Parliament.](https://www.gov.uk/government/publications/terrorism-protection-of-premises-act-2025-notification-requirement/terrorism-protection-of-premises-act-2025-notification-requirement-accessible) The SIA is building its online notification system and will publish further operational details nearer to commencement. Use this implementation period to prepare now.

## Protect Duty Compliance Checklist

The following checklist is organized by tier and gives you a practical sequence to follow during the implementation period.

**For All Premises and Events:**

Start by determining whether your premises fall in scope, using the 200 or more people threshold at the same time. If you are in scope, identify the responsible person who will own compliance, then review the statutory guidance and complete ACT Awareness training through ProtectUK.

**Standard Tier:**

Standard tier preparation begins with a terrorism evaluation that informs your procedures. You then develop public protection procedures, train staff on those procedures, and keep clear records of every step.

- Conduct a terrorism evaluation
- Develop public protection procedures such as evacuation, invacuation, lockdown, and communication
- Train staff on procedures
- Document everything

**Enhanced Tier (In Addition to Standard Tier):**

Enhanced tier premises build on the Standard tier foundation. You add a formal terrorism risk assessment, a written security plan, a named senior lead, and specific public protection measures, then prepare documentation for SIA inspection.

- Conduct a formal terrorism risk assessment
- Develop a written security plan
- Appoint a named senior lead
- Consider public protection measures such as CCTV, bag searches, and vehicle checks
- Prepare documentation for SIA inspection

Documentation is essential at both tiers. A visual planning tool like OnePlan helps you record layouts, crowd flow, and security measures, creating professional, to-scale plans that demonstrate compliance and are ready to share with security teams and the SIA.

![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**

## Common Pitfalls to Avoid

- **Assuming the duty only applies to large venues:** [The Standard tier captures premises with 200–799 people](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance), so many restaurants, shops, and smaller venues are in scope.
- **Misinterpreting “reasonably practicable”:** [This means proportionate measures that weigh cost and difficulty against safety benefits](https://www.gov.uk/government/publications/the-terrorism-protection-of-premises-act-2025/terrorism-protection-of-premises-act-2025-statutory-guidance), rather than every possible measure.
- **Failing to document procedures:** Even Standard tier requires you to demonstrate compliance, so documentation remains essential.
- **Waiting for commencement:** Use the implementation period to get ahead, because waiting increases your compliance risk.
- **Assuming physical security is always required:** [Standard tier requires procedures, while Enhanced tier requires consideration of measures “so far as reasonably practicable.”](https://www.protectuk.police.uk/martyns-law/martyns-law-overview-and-what-you-need-know)

## How OnePlan Helps You Prepare for Protect Duty

OnePlan is a visual, to-scale event site planning platform that gives venue operators and event organizers the documentation tools Protect Duty compliance demands. With [200,000 events planned across 150 countries](https://www.oneplan.io/case-studies/how-silverstone-planned-the-british-grand-prix-in-oneplan/?utm_term=protect-duty-compliance-requirements&utm_campaign=ai_growth_agent), OnePlan is trusted from community festivals up to the Olympics.

![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**

For Protect Duty preparation, OnePlan helps you:

- Create accurate, to-scale maps of your premises or event site on a live satellite or street map base
- Plan crowd flow, ingress, and egress routes to identify and address vulnerabilities before an inspection
- Document security measures, staff positions, and emergency procedure routes on a single live plan
- Collaborate with security teams, police, fire, and Safety Advisory Groups on one shared plan, avoiding emailed versions and version-control issues
- Export professional, high-resolution plans for compliance documentation and SIA submissions
- Use the standing crowd capacity calculator to demonstrate safe capacity decisions

[Silverstone](https://www.oneplan.io/case-studies/how-silverstone-planned-the-british-grand-prix-in-oneplan/?utm_term=protect-duty-compliance-requirements&utm_campaign=ai_growth_agent) plans the Formula 1 British Grand Prix and more than 50 events a year. It uses OnePlan as its single source of truth across 9,000 contractors, 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-compliance-requirements&utm_campaign=ai_growth_agent) reduced site visits by 75% and saved over 300 hours a year by coordinating every stage in OnePlan.

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

[Start planning your compliance documentation today, with your first event free on OnePlan.](https://www.oneplan.io/book-demo/?utm_term=protect-duty-compliance-requirements&utm_campaign=ai_growth_agent)

## Frequently Asked Questions

### What Are the Four P’s of Preventing Terrorism?

The four P’s are Prepare, Protect, Prevent, and Pursue, which are the four strands of the UK Government’s [CONTEST counter-terrorism strategy](https://www.protectuk.police.uk/martyns-law/martyns-law-overview-and-what-you-need-know). CONTEST aims to reduce the risk from terrorism to the UK and its interests. Protect Duty specifically builds on the Protect and Prepare strands, which focus on making the UK and its public spaces harder to attack and better prepared to respond if an attack occurs. This framework helps venue operators and event organizers see where their legal obligations fit within the broader national counter-terrorism effort.

### What Is the Protect Duty Commencement Date?

The Terrorism (Protection of Premises) Act 2025 received Royal Assent in April 2025, and substantive requirements are expected no earlier than April 2027. As detailed above, the SIA will confirm the exact commencement date through Parliament and will publish further operational details closer to that time. Organizations should use the current implementation period to assess their scope, develop procedures, and document their security measures.

### Who Enforces Protect Duty?

The Security Industry Authority (SIA) is the designated regulator for the Terrorism (Protection of Premises) Act 2025. The SIA’s approach will be supportive, proportionate, and risk-based. It has the power to conduct inspections, issue compliance notices requiring specific actions within a set timeframe, issue restriction notices that can limit or stop a venue or event from operating, and impose monetary penalties for non-compliance. The SIA is also responsible for operating the notification system through which responsible persons register their premises or events.

### What Are the Penalties for Non-Compliance with Protect Duty?

Standard tier breaches carry civil fines of up to £10,000. Enhanced tier breaches can result in fines of up to £18 million or 5% of worldwide turnover, whichever is greater. Daily penalties of up to £50,000 may apply for ongoing non-compliance. In addition to financial penalties, the SIA can issue restriction notices that limit or stop operations. Ignoring SIA compliance or restriction notices is a criminal offence that can lead to court action. Non-compliance can also trigger civil claims, insurance complications, and significant reputational damage.

### Does Protect Duty Apply to Outdoor Events?

Protect Duty applies to qualifying events, including outdoor events where 800 or more people may be present and entry is subject to checks. These events fall within the Enhanced tier and are subject to the same requirements as Enhanced tier premises. Outdoor festivals, large sporting events, and similar gatherings with entry controls need a formal terrorism risk assessment, a written security plan, a named senior lead, and appropriate public protection measures, in addition to the public protection procedures required of all in-scope premises and events.

### What Training Do Staff Need Under Protect Duty?

Staff at all in-scope premises and events must complete counter-terrorism awareness training. The recognized baseline is ACT (Action Counters Terrorism) Awareness training, which is free and available through ProtectUK. ProtectUK also offers ACT for Events, a training program specifically designed for event organizers and event professionals. Enhanced tier premises should consider additional role-specific training beyond the baseline ACT Awareness course. The Home Office guidance states that compliance, including training, should not require specialist or consultancy services, because free, government-backed resources are available to all.

## Start Preparing Today

Protect Duty is coming. The Terrorism (Protection of Premises) Act 2025 is law, the statutory guidance is published, and the SIA is building its regulatory infrastructure ahead of an expected commencement no earlier than April 2027. Use this implementation period to get ahead.

Whether you operate a Standard tier venue or an Enhanced tier event, the steps are clear. Determine your scope, identify your responsible person, develop your public protection procedures, train your staff, and document everything. For Enhanced tier premises and qualifying events, add a formal risk assessment, a written security plan, and a named senior lead.

Visual planning tools make the documentation side of compliance achievable. OnePlan lets you create accurate, to-scale maps of your site, plan crowd flow and security measure placement, and export professional plans for compliance files and Safety Advisory Group meetings, all on one collaborative, live platform at the scale mentioned earlier.

[Ready to prepare for Protect Duty? Book a 15-minute demo to see OnePlan in action.](https://www.oneplan.io/book-demo/?utm_term=protect-duty-compliance-requirements&utm_campaign=ai_growth_agent)

## Read Next

- [Special Event Safety Plan Requirements Explained](https://oneplan.io/articles/safety-plan-requirements-special-events?utm_term=protect-duty-compliance-requirements&utm_campaign=ai_growth_agent)
- [Festival Barrier Placement Guide for Safer Events](https://oneplan.io/articles/festival-barrier-placement-guide?utm_term=protect-duty-compliance-requirements&utm_campaign=ai_growth_agent)
- [How to Create an Event Site Plan for Fire Marshal Review](https://oneplan.io/articles/event-site-plan-fire-marshal?utm_term=protect-duty-compliance-requirements&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-compliance-requirements&utm_campaign=ai_growth_agent)
- [Event Safety Map for City Permit: What to Include](https://oneplan.io/articles/event-safety-map-city-permit?utm_term=protect-duty-compliance-requirements&utm_campaign=ai_growth_agent)

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---

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- [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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