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Where Can I Find My Company Registration Number?
If you've misplaced your company's registration number, there are several places you can find it free of charge, no need to pay for a fresh copy of anything. It's also worth knowing what the number actually looks like, so you can confirm you've got the right one once you find it.
Key Takeaways
- A UK company registration number is 8 characters, either all digits or two letters followed by six digits.
- Your Certificate of Incorporation is the most obvious place to check first, since it's issued with the number already on it.
- If your company was formed with us, it's also visible directly in your account under "My Companies."
- The Companies House website lets you look up any UK company's number for free, including one that isn't yours.
- You'll need this number regularly, for tax filings, invoices, and any official correspondence with Companies House or HMRC.
Where Can I Actually Find It?
Your Certificate of Incorporation. This is your company's official "birth certificate," and it includes your registration number alongside other basic company details. If you don't have a copy to hand, your formation provider should be able to help you access one.
Your company admin portal. If your company was formed with us, log in and select "My Companies." Your registration number appears on the next page.
The Companies House website. Search using Companies House's own lookup service, entering your company name. Your number appears alongside the result, and this works for any UK company, not just your own.
What Does a Company Registration Number Actually Look Like?
It's 8 characters long, either eight digits, or two letters followed by six digits (companies registered in Scotland, Northern Ireland, or under certain other structures often use a letter prefix). It's worth double-checking the number you've found matches this format, since a typo or a mixed-up digit can cause problems later if you use it on an official filing.
Why Would I Need My Company Registration Number?
It comes up more often than most people expect once a company's actually trading: on invoices and official stationery, when filing your Confirmation Statement or annual accounts, when registering for VAT or PAYE, and any time you're dealing directly with Companies House or HMRC. Keeping it somewhere easy to find, rather than digging for it each time, saves a genuine amount of hassle.
FAQs
Where's the quickest place to find my company registration number?
Your Certificate of Incorporation, or your account with your formation provider if your company was formed with one.
Can I look up another company's registration number, not just my own?
Yes, the Companies House website lets you search for any UK company by name and see its registration number for free.
What format does a UK company registration number take?
8 characters, either all digits, or two letters followed by six digits, depending on where and how the company was registered.
Does it cost anything to find my company registration number?
No, all the routes above are free. There's no need to pay for a lookup service.
This article is for general information only and does not constitute legal advice. For the fuller picture on registration numbers specifically, see our companion guide on what a company registration number actually is.
