Submit a National Security and Investment notification

Use this service to notify the government of acquisitions that fall under the National Security and Investment Act 2021 (NSI Act).

The service can be used by:

• notifying parties (such as acquirers)
• representatives of notifying parties (such as law firms)

You can sign in to view the status of notifications you've started or submitted.

Before you start

You should collect all the information you need before using this service to submit your notification.

Read the NSI Act guidance to check when you:

• are legally required to notify the government about an acquisition
• can voluntarily notify the government about an acquisition

These documents list all the questions you'll be asked, with guidance and examples to help you provide the right information:

• Mandatory notification questions and guidance (MS Word, 98KB)
• Voluntary notification questions and guidance (MS Word, 101KB)
• Retrospective validation questions and guidance (MS Word, 83KB)