HVM Impact Rated Barriers

CPNI launch extensive Vehicle Security Barrier list

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Your views needed

CPNI Website Survey

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Think before you link

Online networking security guidance

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Returning to Work COVID-19

CPNI's COVID-19 Workplace Actions campaign

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ACT Early

New CT Policing Safeguarding Website

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Trusted Research

Guidance for academics

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CPNI is the UK national technical authority for physical and personnel protective security advice

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What We Do

We are leaders in security, providing resources, guidance and expert advice to help protect and keep your business secure from external threats.

Our Advice & Expertise


Effective physical security of an asset is achieved by multi-layering the different measures, what is commonly referred to as ‘defence-in-depth’.

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Senior leaders need to understand key principles of protective security to guide strategic decision-making.

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CPNI’s protective security methodology is based on the core principles of Deter, Detect and Delay.

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About CPNI

CPNI is the government authority for protective security advice to the UK national infrastructure. Our role is to protect national security by helping to reduce the vulnerability of the national infrastructure to terrorism and other threats.

CPNI in Context

Government policies that impact the work of CPNI include the National Security Strategy, National Risk Register and Counter Terrorism Strategy.

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CPNI Office

Critical National Infrastructure

CPNI is focussed on providing advice and assistance to those who have responsibility for protecting these most crucial elements of the UK’s national infrastructure from national security threats.

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National Infrastructure Tower

Who We Work With

CPNI works with partners in government, police, industry and academia to identify risks to and reduce the vulnerability of the national infrastructure, focusing in particular on critical national infrastructure.

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