The UK's proposed new national security regime: a sledgehammer to crack a nut
Nicholas Levy
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John Messent
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Edward Dean
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Chloe Hassard
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On 11 November 2020, the UK Government published the National Security and Investment Bill (NSI Bill), which, if approved by Parliament, would allow the Secretary of State for Business, Energy and Industrial Strategy (Secretary of State) to screen and prohibit ‘potentially hostile’ investments that threatened UK national security.

The proposed system would represent the most significant change in the UK regulatory environment since the Government ceded the power to approve or prohibit mergers on competition grounds to an independent agency in 2002. The envisaged regime would be among the most wide-ranging and onerous in the world, adding a new layer of mandatory review and imposing non-trivial costs on investments in any company with UK activity.

This article describes the UK's existing public interest intervention regime, explains the background to the Government's proposed new regime, including similar initiatives elsewhere in the world, summarizes the principal features of the proposed new UK regime, and considers its potential implications for investments in the UK.

Contributor Notes

Partner, Cleary Gottlieb Steen & Hamilton LLP, London and Brussels.

Senior Attorney, Cleary Gottlieb Steen & Hamilton LLP, London.

Associate, Cleary Gottlieb Steen & Hamilton LLP, Brussels.

Associate, Cleary Gottlieb Steen & Hamilton LLP, London. The authors are grateful for the assistance of their colleagues Sam Bagot, Nallini Puri, and Paul Gilbert in London, Richard Pepper in Brussels, Chase Kaniecki in Washington, DC, and Aurèle Delors in Paris. The opinions expressed in this article are the authors’ own and are not attributable to their firm or clients, in particular those clients mentioned in this article that the firm has represented and advised.

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