A timeline of Martyn's Law: how we got here and what comes next
Published
A trade publication has set out the story of Martyn's Law so far — from the 2017 Manchester Arena attack to Royal Assent and the run-up to commencement. Here is what venue operators should take from it.
What happened
Professional Security Magazine Online has published a timeline tracing the journey of Martyn's Law. It covers the origins of the campaign following the 2017 Manchester Arena attack, in which 22 people were killed, and the years of work that led to the Terrorism (Protection of Premises) Act 2025 receiving Royal Assent on 3 April 2025. The piece also looks ahead to the period before the duties take effect.
Why it matters for venues
The Act is now law, but its duties are not yet in force. Commencement is expected in spring 2027, and the exact date has not been confirmed. A timeline like this is a useful reminder that operators have time to understand the framework rather than rush. It also explains the human story behind the law, which can help staff see why preparation matters.
A quick recap of the tiers
The Act sets two tiers. The standard tier covers premises where 200 to 799 people may reasonably be expected at the same time. The enhanced tier applies at 800 or more. These counts include staff. The Security Industry Authority will act as regulator, though its notification process is not yet live.
What to do now
There is nothing you must do today under the Act. Use this settling-in period to familiarise yourself with where your premises might sit and to start thinking about simple, practical readiness steps. Keep an eye out for the confirmed commencement date and official guidance as they emerge.
This is our plain-English summary. Read the original in full at Professional Security Magazine Online.