Look up a company by number

    CRN number search (United Kingdom)

    Source-cited registry guidance — access and document fees vary by source.

    Search Companies House at the official source

    Start with Companies House for United Kingdom. LemReveal has not established an available native register search for this page; indexed or secondary records are not complete register coverage.

    Open official portalRequest a record check

    Official access and fees vary. A human request is an enquiry, not a guaranteed extract or completed purchase.

    Reviewed by LemReveal Research TeamContent reviewed June 2026Primary source: Companies House

    How do I look up a company by its registration number in United Kingdom?

    Use the exact CRN with its issuing jurisdiction or register on Companies House. Compare the returned legal name and identifier. A valid-looking number does not guarantee a result: coverage, formatting, access and source availability affect the lookup.

    Step-by-step

    1. 1

      Find the CRN on the paperwork

      The CRN normally appears on invoices, contracts, the website footer or official correspondence. It is the number counterparties are required to quote.

    2. 2

      Search the CRN

      Preserve leading zeros, letters, court and jurisdiction information. Follow the source's documented format rather than removing meaningful parts to force a match.

    3. 3

      Confirm the returned entity

      Check the legal name on the returned record matches the name on your paperwork. A mismatch between quoted number and quoted name is a serious warning sign.

    4. 4

      Verify at Companies House

      For anything contractual, confirm the number against the primary source at https://www.gov.uk/government/organisations/companies-house.

      https://www.gov.uk/government/organisations/companies-house
    Open Companies HouseAll United Kingdom records

    United Kingdom: choosing and checking the right record

    Choose the correct source
    Start with the exact Companies House company number. If you only have a name, compare the legal name and previous names, then open the company profile rather than treating the search-results list as confirmation.
    Confirm the entity
    Keep leading zeros and jurisdiction prefixes such as SC or NI. Compare the registered office and incorporation date with the counterparty's documents. A sole trader or trading brand may not have a Companies House record.

    Check current access and document options on the official Companies House site. For search limitations and missing-result guidance, see the United Kingdom registry guide.

    Frequently asked questions

    What is a CRN in United Kingdom?

    It is the identifier Companies House assigns to a registered entity. It stays with the entity even if the trading name changes, which makes it the reliable way to track a company over time.

    Is a CRN lookup free?

    LemReveal's basic lookup is free where supported. Check Companies House's official access rules for the record or document required.

    What if the CRN returns no result?

    Check the format, issuing jurisdiction, coverage and source availability. Preserve meaningful prefixes and leading zeros. An unavailable source is not a confirmed absence; ask the counterparty to clarify the identifier.

    Should I use the CRN or the company name?

    The CRN. Names are duplicated across entities within a group; the number is unique to one entity.

    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 look up a company by its 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.

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