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ARTICLE · 15 NOVEMBER 2022

National Security And Investment Act 2021

Lewis Silkin
Lewis Silkin
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Lewis Silkin

Lewis Silkin

Joint managing partners: Jo Farmer, Richard Miskella International offices: Dublin, Hong Kong...

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The National Security and Investment Act 2021 ("NSI Act") provides the UK government with new powers to scrutinise investments on national security grounds.

United KingdomGovernment, Public Sector
Nikki Blair
Nikki Blair
Wendy Saunders
Wendy Saunders
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The National Security and Investment Act 2021 (“NSI Act”) provides the UK government with new powers to scrutinise investments on national security grounds. The regime set out in the NSI Act came into force on 4 January 2022.

In this briefing we provide a brief overview of the NSI Act and some high level commentary on its implementation to date.

What is the National Security and Investment Act 2021?

The NSI Act establishes a new standalone regime for the scrutiny of, and intervention in, acquisitions and investments in the UK for the purposes of protecting national security. Key features include:

  • mandatory notification of some transactions in 17 specified sectors (see below);

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