Martyn’s Law Preparedness and Public Trust

Why practical security preparation matters beyond the legislation itself

Martyn’s Law preparedness is primarily about improving how qualifying premises and events prepare for a terrorist attack and reduce the risk of physical harm. Clear procedures, staff awareness and proportionate measures can also give an organisation a more factual basis for explaining its approach to safety, without claiming that risk has been removed or that preparedness guarantees public trust.

Current legal position — 23 September 2026: the Terrorism (Protection of Premises) Act 2025 is law, but its substantive duties are not yet in force. The SIA is preparing for commencement in spring 2027; the exact date has not yet been confirmed. Home Office statutory guidance was last updated on 25 August 2026, with principal-use guidance published on 10 September 2026.

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Preparedness Starts With Doing the Basics Well

Public trust should not be treated as a marketing claim, a compliance badge or a substitute for effective security. The stronger position is to understand the site, put workable procedures in place and make sure the people responsible know what to do. Any reputational benefit is secondary and cannot be guaranteed.

Clearer Emergency Procedures

Written procedures give staff a common starting point for evacuation, invacuation, lockdown and communication rather than leaving decisions to be improvised during an incident.

Better Staff Awareness

People with a role in the response need enough information, instruction and practice to understand what is expected of them and how the procedure applies to their workplace.

More Defensible Decisions

Recording why procedures and measures were selected creates a clearer basis for reviewing whether they remain appropriate as the premises, event or risk picture changes.

More Consistent Communication

Prepared organisations can explain their approach in measured terms rather than making vague claims about being “secure” or “compliant” before the legal duties commence. That can improve the quality of communication, but it does not guarantee a reputation outcome.

How Should Organisations Communicate Security Preparedness?

Security communication needs judgement. Too little information can leave staff unsure what to do; too much public detail can expose information that should remain operational. Communication should therefore be useful, proportionate and appropriate to the audience.

  • Tell staff what procedures they need to understand and what their responsibilities are.
  • Keep public-facing statements factual and avoid promising that a site is completely safe.
  • Use signage where it genuinely supports access control, emergency information or public behaviour.
  • Keep sensitive operational details, vulnerabilities and security arrangements out of general marketing material.
  • Review public wording when procedures, legislation or site arrangements change.

The Act does not require organisations to advertise their security arrangements to visitors. Communication duties are about having appropriate procedures for warning people and giving instructions during a suspected or actual attack.

Does Acting Early Have a Practical Advantage?

There can be practical advantages to preparing during the implementation period. That does not mean an organisation can claim to be “compliant early” while the substantive duties are not yet in force. The SIA is encouraging potentially in-scope organisations to understand the legislation and begin considering how it may affect their premises or event.

Time to Understand the Premises

Larger or more complex sites can identify shared areas, multiple responsible persons, occupancy questions and procedure gaps before regulatory deadlines apply.

Time to Test Procedures

Procedures can be reviewed with the people expected to use them, helping identify practical problems before they are relied on during an emergency.

Time to Avoid Unnecessary Spending

Standard Tier duties focus on appropriate public protection procedures and do not automatically require physical alterations or buying specific security equipment.

Time to Plan Enhanced Tier Measures

Enhanced Tier premises and qualifying events have additional duties, so early planning can help identify which public protection measures may be appropriate and reasonably practicable.

Where Do Lockdown Alarms Fit?

A lockdown alarm may support the communication part of an organisation's emergency procedures where a dedicated warning method is appropriate for the site.

A lockdown alarm is not itself a requirement of Martyn’s Law, and installing one does not establish compliance. A dedicated warning method may support lockdown and communication where it is appropriate for the site. The useful questions are whether the alert can be raised quickly, whether it reaches the required areas, whether people understand what it means and whether it supports the written procedure.

For schools, venues and workplaces considering dedicated alerting, see our lockdown alarm systems guide .

Use Current Official Martyn’s Law Guidance

Camelott® guidance can help explain planning and communication, but current Home Office and SIA material should remain the source of truth for scope, duties and commencement.

Home Office Statutory Guidance

The current section 27 guidance covers scope, responsible persons, public protection procedures and the additional Enhanced Tier duties. Read GOV.UK guidance ↗

SIA Regulator Guidance

The SIA explains its role as regulator and the current expected spring 2027 commencement. Read SIA guidance ↗

Principal-Use Guidance

Home Office guidance published on 10 September 2026 explains how principal use is determined where premises have two or more Schedule 1 uses. Read principal-use guidance ↗

SIA Tools & Templates Update

The SIA's 11 September update covers its developing scope tool and optional Standard and Enhanced Tier templates. Read the SIA update ↗

Martyn’s Law Preparedness FAQs

Is Martyn’s Law already in force?
The Act has received Royal Assent, but its substantive duties are not yet in force. The SIA currently expects commencement in spring 2027 and says the exact date will be confirmed before go-live.
Can an organisation say it is Martyn’s Law compliant now?
It is better to describe the practical preparation already completed rather than claim compliance with duties that have not yet commenced. Organisations can review scope, procedures, responsibilities and Enhanced Tier measures during the implementation period.
Does Standard Tier require new security equipment?
Not automatically. Standard Tier focuses on appropriate public protection procedures. The legislation does not require organisations to buy a particular alarm, CCTV system or other security product simply because they fall within Standard Tier.
Does Martyn’s Law require a lockdown alarm?
No specific lockdown alarm product is mandated. A dedicated alerting system may support lockdown and communication procedures where it is appropriate for the premises.
Can preparedness improve public trust?
Preparedness can give an organisation a clearer, more factual basis for explaining how safety is managed. It should not be presented as proof that an incident cannot happen, evidence of current statutory compliance or a guaranteed public-trust or reputation benefit.

Build the Procedure First, Then Choose the Supporting Technology

If you are reviewing lockdown communication, Camelott® can assess how an alert could be raised and distributed across the site. We can help with the communication system without presenting hardware as a substitute for the responsible person's wider legal and security duties.

Discuss Your Site Martyn’s Law Explained

General information only, based on Home Office statutory guidance and SIA material available on 23 September 2026. This is not legal advice.