Government publishes cost note on telling the SIA about your premises
Published
A new GOV.UK economic note looks at the costs of the duty to notify the Security Industry Authority under Martyn's Law. The notification process is not yet live.
What happened
The Home Office has published an economic note about the requirement to notify the Security Industry Authority (SIA). This duty sits in section 9 of the Terrorism (Protection of Premises) Act 2025, better known as Martyn's Law. The note sets out the likely costs and impact of asking responsible people to register their premises with the regulator.
What it means for venues
When the law is in force, venues in scope will need to notify the SIA that they exist and who is responsible for them. This covers standard tier premises, where 200 to 799 people may be expected at once, and enhanced tier premises, where the figure is 800 or more. The count includes staff. This economic note is background material about the cost of that step, not a new duty by itself.
An important reminder on timing
The duties are not yet enforceable. Commencement is expected in spring 2027 and the exact date has not been confirmed. The SIA notification process is not live, so there is nothing to submit right now.
What to do now
Use this as a prompt to work out which tier your premises are likely to fall into, based on how many people can reasonably be present at the same time. Note who would be the responsible person for notifying the SIA. There is no rush and no penalty at this stage, so treat it as familiarising and preparing rather than acting.
This is our plain-English summary. Read the original in full at GOV.UK.