Guidance

Martyn's Law: the SIA's new regulatory role

Learn more about Martyn's Law and the SIA's role as regulator.

• From: Security Industry Authority
• Published: 7 April 2025
• Last updated: 27 November 2025 — See all updates

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Martyn's Law: the SIA's new regulatory role

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The Terrorism (Protection of Premises) Act – Martyn’s Law – received Royal Assent on 3 April 2025. The SIA was named as the law’s regulator.

For more information, view the Home Office factsheets about Martyn’s Law.

Published 7 April 2025

Last updated 27 November 2025 + show all updates

1. 27 November 2025

   The HTML attachment has been updated with more recent information.

2. 7 April 2025

   First published.