GovWire

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

Cabinet Office

December 6
09:48 2024

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The NSI notification service will be unavailable for much of the day on Saturday 7th December 2024 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 6 December 2024 +show all updates
  1. Added a message regarding upcoming maintenance on the system

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

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

  4. Removed a message regarding now completed maintenance

  5. Added a message regarding upcoming maintenance on the system

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

  7. Added a message regarding upcoming maintenance on the system

  8. Removed a message regarding maintenance

  9. Added a message regarding maintenance

  10. Removed a note regarding planned maintenance

  11. Added a note regarding planned maintenance

  12. Updated with the latest information

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

  14. 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.

  15. Updated contact email address for investment screening

  16. Replaced the following files with the latest versions:Mandatory notification formVoluntary notification formRetrospective validation form

  17. Removed notice of maintenance as it has now completed

  18. Added a notice of upcoming maintenance to the NSI notification service

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

  20. Removed the notice of maintenance as it has now been completed.

  21. .Updated to provide notice that the

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