GovWire

Form: National Security and Investment notification service: mandatory, voluntary and retrospective forms

Cabinet Office

March 14
10:19 2025

class="gem-c-govspeak govuk-govspeak gem-c-govspeak--direction-ltr govuk-!-margin-bottom-0">

The NSI notification service will be unavailable for much of the day on Sunday 6th March 2025 while essential maintenance takes place.We apologise for any inconvenience caused.

You may need to tell the government about certain acquisitions before you can go through with them. You do this by completing and submitting a form through the National Security and Investment notification service - see link below.

This page contains:

Before you submit your notification please check the guidance on the National Security and Investment Act to see if you need to complete a form.

Updates to this page

Published 17 December 2021
Last updated 14 March 2025 +show all updates
  1. Updated to include a message regarding maintenance taking place

  2. Removed a message regarding now completed maintenance

  3. Added a message regarding upcoming maintenance on the system

  4. Replaced the following documents with their updated version:Mandatory notification form Voluntary notification form Retrospective validation form

  5. Removed a message regarding now completed maintenance

  6. Added a message regarding upcoming maintenance on the system

  7. Replaced the following documents with updated versions:Mandatory notification formVoluntary notification formRetrospective validation form

  8. Updated the section 'Supply relationships with the UK government' in the document 'Guidance on completing and registering a notification form'

  9. Removed a message regarding now completed maintenance

  10. Added a message regarding upcoming maintenance on the system

  11. Removed a message regarding now completed maintenance on the system.

  12. Added a message regarding upcoming maintenance on the system

  13. Removed a message regarding maintenance

  14. Added a message regarding maintenance

  15. Removed a note regarding planned maintenance

  16. Added a note regarding planned maintenance

  17. Updated with the latest information

  18. Removed a notice on maintenance work due to its completion.

  19. Added a notice that the NSI notification service will be unavailable for much of the day on Saturday 17th of February 2024 while essential maintenance takes place.

  20. Updated contact email address for investment screening

Related Articles

Comments

  1. We don't have any comments for this article yet. Why not join in and start a discussion.

Write a Comment

Your name:
Your email:
Comments:

Post my comment

Recent Comments

Follow Us on Twitter

Share This


Enjoyed this? Why not share it with others if you've found it useful by using one of the tools below: