What Is a Companies House Personal Code?

Once your identity is verified, Companies House gives you a personal verification code.

It’s unique to you and confirms your verified status within the Companies House system.

You’ll use it when:

  • Authorising an ACSP to act on your behalf
  • Filing company updates
  • Registering or managing a company

When Sharing Is Safe

Who You Can Safely Share With

  • Trusted

    • Authorised Corporate Service Providers (ACSPs)
    • Official Companies House systems
    • Accountants or lawyers registered with HMRC

  • Not Trusted

    • Unknown third-party services
    • Unverified websites
    • Recruiters, agents, or “helpers” who contact you directly

Check Before You Share

Before you provide your code to anyone, confirm that they are an Authorised Corporate Service Provider (ACSP).

You can check this by:

  • Searching the official Companies House ACSP register
  • Checking the firm’s registration number and website domain
  • Confirming communication comes from an official business email address

Best Practices for Keeping It Safe

Follow these steps to ensure your code stays private:

  • Store it in a secure password manager
  • Avoid sharing via social media or unencrypted email
  • Report any suspicious requests immediately
  • Use two-factor authentication where available

Why Misuse Is Taken Seriously

Using or sharing someone’s personal code without permission may constitute fraud under UK law.

Companies House and law enforcement can investigate and prosecute unauthorised use of identity verification codes.

What should I do if I shared it by mistake?

Contact Companies House immediately to revoke and reissue a new code.

Can someone misuse my code?

Yes — that’s why it’s important to act fast. Once revoked, the old code becomes invalid.

How can I prevent this in future?


Never share codes outside official platforms and double-check all requests.

Stay in Control of Your Verification

Your code is your access key — protect it, use it wisely, and share it only with trusted, verified professionals.

Verify Now