Posted October 27, 2025

Is Your Business Prepared For Martyns Law Terrorism (Protection of Premises) Act 2025?

Martyn’s Law requires certain public venues and events to take reasonable steps to prepare for and respond to a potential terrorist attack. The law, officially the Terrorism (Protection of Premises) Act 2025, establishes a tiered system based on the venue’s capacity, requiring smaller “standard tier” venues to focus on policy and procedures, while larger “enhanced tier” venues must go further to reduce their vulnerability to attacks. Key requirements include risk assessments, staff training, and implementing security measures.


What Martyn’s Law means for businesses:

A tiered approach:

The law uses a tiered model to apply requirements proportionally based on the venue or event’s capacity.

  • Standard Tier: For premises and events with a capacity between 200 and 799 individuals, the focus is on staff preparedness and simple, low-cost policies and procedures, such as training and risk assessments.
  • Enhanced Tier: For venues and events with a capacity of 800 or more, there are additional requirements to actively reduce vulnerability to terrorism, as far as is reasonably practicable. This may include security systems and other measures.
  • Reasonable and practical measures:

Businesses are not expected to implement measures that are impossible or overly expensive. The law requires what is “reasonably practicable” to reduce risk and harm.

  • Risk assessment and planning:

A key requirement is to conduct a risk assessment to understand vulnerabilities and then create and implement an emergency plan.

  • Staff training:

Employees will need to be trained to understand the risks and know how to respond effectively to a terrorist incident.

  • Security measures:

Businesses must ensure that appropriate protection measures are in place, which can include a range of security systems and processes to mitigate threats.

  • A new regulator:

The law establishes a new regulator to ensure compliance and provide guidance and support to businesses.

What businesses should do now

  • Familiarise yourself: Review the official guidance from the Home Office and ProtectUK to understand which tier your venue falls into and what your specific obligations will be, say the Home Office.
  • Conduct risk assessments: Begin the process of assessing your venue’s specific risks.
  • Develop and update plans: Start to develop or update your emergency response plans to include measures for terrorist incidents.
  • Plan for training: Consider how you will train your staff and raise their awareness.
  • Stay informed: The 24-month implementation period is intended to give businesses time to prepare. Stay updated on further guidance that will be released by the Home Office.

Martyn’s Law, or the Terrorism (Protection of Premises) Act 2025, was created in response to the 2017 Manchester Arena attack, which killed 22 people including Martyn Hett. The law is the result of a campaign by Martyn’s mother, Figen Murray, and requires venues and events with public access to have better security plans and to reduce their vulnerability to terrorism. The act introduces a tiered system for compliance, based on the expected number of people at a venue or event.

The Act received Royal Assent on April 3, 2025 with the government stating that there will be an implementation period of at least 24 months to allow time for venues and events to prepare for their new obligations.

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