How to find a company's registration number in United Kingdom
Free, official, source-cited — updated 2026-06.
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How do I find a company's registration number in United Kingdom?
Search the company's name on Companies House at https://www.gov.uk/government/organisations/companies-house. The result page shows its registration number — the same identifier that appears on invoices, contracts, and government filings.
Step-by-step
- 1
Open Companies House
Navigate to https://www.gov.uk/government/organisations/companies-house.
https://www.gov.uk/government/organisations/companies-house - 2
Search by company name
Type the exact trading or legal name. Partial matches usually work; add the city if the name is common.
- 3
Copy the registration number
The registration number is displayed at the top of the entity profile. It is the authoritative ID for cross-referencing.
- 4
Confirm it's the right entity
Check the registered address and incorporation date to be sure you have the correct legal entity, especially for groups with similarly named subsidiaries.
Frequently asked questions
Where is a United Kingdom company's registration number published?
It appears on the entity's public profile in Companies House (https://www.gov.uk/government/organisations/companies-house) and must be quoted on invoices, contracts, and official correspondence.
Is looking up a United Kingdom registration number free?
Yes. Basic name-to-number lookup on Companies House is free and does not require an account.
How do I look up a UK company?
You can search by company name or registration number. Companies House provides free public access to all registered company data including directors, filing history, and accounts. Enter a name above to try it.
People also ask about find a company's registration number in United Kingdom
The exact questions searchers type into Google — answered from the primary source.
Is the United Kingdom company register free to search?
Yes. Basic company lookups on the Companies House are free — you can search by company name or registration number, view legal status, registered address and (usually) directors at no cost. Some jurisdictions charge a small fee only for downloading full filed documents.
What is the official United Kingdom business registry?
The Companies House is the official public register of companies incorporated in United Kingdom. It is operated by the government and is the primary source cited on this page — https://www.gov.uk/government/organisations/companies-house.
Where do I find a United Kingdom company's registration number?
Every registered United Kingdom entity has a unique registration number issued at incorporation. It appears on invoices, contracts, the company's website footer (often in a "legal" section), and prominently on its Companies House record.
Is a United Kingdom registration number the same as a VAT number?
No. The registration number is the identifier issued by the Companies House when the company was formed. The VAT number is a separate tax identifier issued (only if the company is VAT-registered) by the national tax authority. Many small companies have a registration number but no VAT number.
Related guides and tools
More United Kingdom guides
- Search companies by name
Find any registered company from a partial name — free, no signup.
- Search the company register
What the official register holds, and how to search it free.
- Search the business registry
Match a trading name to the registered legal entity behind it.
- Find the right entity
Tell apart several entities registered under near-identical names.
United Kingdom data
- United Kingdom company search
Search every Companies House record.
- Companies House guide
Companies House (UK)