The Home Office, Security Industry Authority, National Counter Terrorism Security Office and National Protective Security Authority are the four key partners working together as part of the UK protective security system to ensure premises and events in and out of scope of the Terrorism (Protection of Premises) (TPOP) Act 2025 are protected and better prepared in the event of an attack.
Roles and responsibilities
The Home Office sets the strategy for the protective security system, developing policy and delivering legislation. This includes developing and publishing section 27 statutory guidance about how to comply with TPOP. The Home Office will monitor the effectiveness of TPOP after it has entered into force.
The SIA will regulate compliance with TPOP. This includes promoting compliance through communications activities, and publishing section 12 operational guidance about how it will exercise its function as a regulator. The SIA will produce wider products to support those in scope of TPOP to comply with their legal obligations. As the regulator the SIA will assess compliance and take proportionate steps to drive compliance where required.
NaCTSO provides practical protective security advice. This includes supporting organisations and government partners by producing accessible, expert advice and products which will assist those in and out of scope of TPOP. NaCTSO will continue to publish key protective security updates regarding TPOP on the ProtectUK website.
As National Technical Authority for physical and personnel security, NPSA develops and publishes protective security guidance for a wide range of users. This includes guidance intended to help those responsible for security at public premises and events understand threat and risk, and identify and implement effective security mitigations, including response planning. NPSA will continue to develop and maintain its guidance offer in support of TPOP.