Complain to the Adjudicator's Office
Use our form to complain against HMRC, the Valuation Office Agency, or the Adjudicator’s Office.
You can use this online form to contact the Adjudicator’s Office to:
- complain about HM Revenue and Customs (HMRC) or the Valuation Office Agency (VOA)
- complain about the Adjudicator’s Office service or a decision they have made
Before you start
Check if you can contact the Adjudicator’s Office to:
What you’ll need
You’ll need to sign in to complete the online form using either your:
- email address
- Government Gateway account, if you already have one
You’ll also need to:
- give your contact details, including your telephone number, postal address and email address
- explain why you’re contacting the Adjudicator’s Office
- suggest what you would like to happen next
If you’re representing someone else
You must also:
- give the postal address and email address of the person you’re acting for
- upload a scan or photo of a completed Authority to act form that the person you’re representing has signed
Notice: Temporary Issue with Encrypted Emails
We are currently experiencing a technical issue with our encrypted email service. Some customers may be unable to open messages because the one‑time passcode is not working correctly.
What this means for you
- If you have received an encrypted email from us since 12 December 2025, you may not be able to view it online.
- We are sending paper copies of affected correspondence by post. You do not need to take any action.
Your data remains secure
Your personal information is still encrypted and protected. The issue only affects access to the message, not the security of your data.
What we are doing
We are working to fix this as quickly as possible. In the meantime, please expect to receive letters by post instead of encrypted email.
Need help?
If you have questions, please contact us by post at Adjudicator’s Office, PO Box 11222, Nottingham, NG2 9AD or call 03000 571 111.
We apologise for any inconvenience and appreciate your understanding.
Complete the online form
What happens next
We will review your request and send you an email with a link to our reply.
If you cannot use the online form
If you are unable to use the online form, you can send your request by post.
Updates to this page
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Added information for our customers relating to a temporary fault with our encrypted email service.
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Reference to how to contact us about how the Home Office handled a compensation claim has been removed. The Adjudicator's Office no longer deal with this activity.
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A new version of the online form is now available.
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Added Welsh translation
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Removed notification that our online form is unavailable.
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Including a notice that our online contact service is temporarily unavailable.
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First published.