THE ONSIREN VENUE TOOLKIT

Understand the law. Prepare your people.

Free, practical Martyn’s Law guides. Start with the questions that matter at your venue, then bring the right people into the conversation.

Create a guide for any venue. No email or account required.

A lit scale model of a city block at night, with five glass layers stacked above a concert hall, each showing a part of Martyn’s Law. The concert hall is labelled 800 or more people and a pub on the corner 200 to 799 people. From the top, the layers are labelled enhanced measures, communication, lockdown, invacuation and evacuation. Crowds queue outside while stewards check bags. Illustrative venue, regulated by the SIA.
Illustrative venue
CHOOSE YOUR STARTING POINT

A guide for the way your place works.

Worked examples, questions to resolve and optional prompts you can use with your team.

  1. What are you assessing?

    Confirm the premises or event, its use and the spaces included. A separately operated area or shared building can need a closer review.

  2. How many people are reasonably expected together?

    Include the relevant staff and busy periods. Choose a range or leave the answer unknown while you confirm it. Public capacity is supporting information.

  3. Who controls the relevant use?

    Identify the relevant person or organisation and resolve any shared responsibility. Bring the operator, host or hirer into the discussion where needed.

What your free toolkit includes

A conditional explanation based on your answers, eight practical worksheets and a private preparation checklist. You can preview a separate general guide, share a fixed version and add an optional password.

Your working answers and progress stay in your workspace and aren’t included in a shared guide. Completing the prompts records preparation progress and provides no certification or safety assurance.

Official sources

Source review: 14 October 2026. OnSiren publishes these guides independently, based on the official sources listed here. The linked organisations retain their official roles, and OnSiren makes no claim of endorsement by the Home Office or the SIA.

Cookies

We use cookies to understand how our website is used and improve your experience. These analytics cookies are optional: nothing is set unless you accept. For more information, please see our Cookie Policy.

Martyn’s Law, explained for your venue | OnSiren