The introduction of the National Security and Investment Act 2021, which came into force on 4th January 2022, signifies a key change in the UK’s regime of control over foreign direct investment (FDI) and has the potential to impact almost all types of business and investment.

The regime introduced by the Act gives the government broad powers to screen investment into UK companies and assets. This includes both a requirement for certain transactions to be cleared by the UK government before they can proceed, and an ability for the government to “call in” transactions falling outside the mandatory regime and which may nonetheless pose a national security risk.

Please see our NSIA briefing note here for more details on the scope of the Act, as well as potential implications of non-compliance. Our NSIA flowchart shows the stages to be considered in determining whether or not the Act applies.

Clearance can be obtained on either a voluntary or mandatory basis – this may be conditional if the government has concerns about the transaction.

Given the potential impact on both timing and structure of an investment, it is important for the implications of the Act to be considered at an early stage.

We can provide tailored and pragmatic advice to help you navigate the complexities of the new regime. If you wish to discuss a potential transaction or have any questions about how the National Security Act may impact you please contact Catriona Macallan.

Written by

Related News, Insights & Events

Error.

No results.

Property Risks Conference Navigating Change In Commercial Property Website

Property Risk Conference - Navigating Change in Commercial Property

23/04/2026


Join us for our property risk conference, a morning seminar bringing together legal and industry insight on the key risks and opportunities shaping the commercial property sector.

Read more
Overview Image

Junior Energy In-House Lawyers Webinar Series 2026

25/03/2026 - Online webinar


A ten-module online learning programme for junior in-house lawyers looking to increase their knowledge and skills around the different stages of an energy project lifecycle.

Read more
The Risk Landscape In 2026 Key Risks For Your Organisation3 No Blur

The risk landscape in 2026: Key issues and how to manage them

18/03/2026


This event explores key risks facing your organisations and provides practical guidance on what you can do to best protect your business and ensure its resilience.

Read more

Want to hear more from us?

Subscribe here Subscribe here