Check Company Name Availability in the UK Instantly

Selecting the right trade or company name is one of the most important steps in the business registration process. Your company name forms the foundation, so its essence, your business name is both an asset and a brand and needs careful consideration.
The UK has millions of businesses, each with a unique name as required by law. It can seem daunting to find a distinctive or novel business name. The free United Kingdom company name check aims to take away some of this confusion. This essential online tool makes it easier to find a name that’s not already being used, amongst other things.
What Are the Requirements for a Company Name in the UK?
Choosing the right company name is a crucial first step when starting a business in the UK. A compliant and distinctive name not only represents your brand but is also legally required for UK company registration with Companies House. Ensuring your name meets all rules prevents delays, legal issues, and potential rejection during incorporation.
Key Requirements for a UK Company Name
- Unique and Distinct: The name must be different from any existing company or limited liability partnership in the UK to avoid confusion and meet Companies House regulations.
- Legally Compliant Words: Certain words and phrases are restricted. Terms like “Royal,” “Government,” or regulated professional titles require prior approval before use.
- Accuracy and Transparency: The company name should accurately reflect your business activities and not mislead clients, customers, or the public about its operations.
- Legal Structure Identification: UK business names must indicate the company type, e.g., “Limited” (Ltd) for private companies or “LLP” for limited liability partnerships.
- Intellectual Property Compliance: Conduct a trademark check to ensure the chosen name does not infringe existing trademarks, protecting your brand and avoiding legal disputes.
- Format and Readability: Names can include letters, numbers, and approved symbols, but should remain professional, concise, and easy to read, avoiding unnecessary punctuation or overly long names.
- Brand and Marketing Considerations: Although not a legal requirement, selecting a name that is memorable, easy to spell, and aligned with your business identity can strengthen marketing and brand recognition.
Verification of name availability should be conducted across Companies House, HMRC, and the UK Intellectual Property Office prior to filing to ensure regulatory compliance and prevent incorporation delays.
What Words Cannot Be Used in a Company Name?
When registering a company in the UK, certain words and expressions are legally restricted. Companies House enforces these regulations to ensure transparency, prevent misleading business practices, and protect the public and regulatory interests. Using restricted terms without appropriate authorisation can result in application rejection or legal consequences.
- Sensitive or Protected Terms
Words such as “Royal,” “King,” “Queen,” “Government,” or “Charity” are protected by statute. Their use requires explicit approval from the relevant authority. - Industry-Specific Terms
Certain professional or regulated sectors, including banking, insurance, legal, and medical services, impose restrictions. Terms like “Bank,” “Insurance,” or “Solicitor” can only be used with regulatory authorisation from the relevant professional or governing body. - Misleading Words
Names must not imply a false connection with public authorities, regulatory bodies, or professional institutions. Misleading terminology is strictly prohibited. - Offensive or Inappropriate Language
Any term considered obscene, discriminatory, or offensive will be rejected by Companies House. - Trademark and Intellectual Property Restrictions
Words protected under existing trademarks or intellectual property laws cannot be used, as this may expose the business to legal disputes or infringement claims.
It is also important to abide by the business name rules as set out by the Companies House, which administers and governs all company registration in the UK. The Companies House also has an online tool to check on the availability of a particular name and other company information.
You will need to check not only the availability of the name but also any conflicts with trademarks, etc. There are also rules on the usage of names with symbols, signs, etc. Some general rules to bear in mind include:
- Names cannot be an existing trademark.
- Names must not be offensive or ‘sensitive.’
- Names cannot be too similar, the same as or too like another business name.
- Names cannot be linked to governmental departments, etc., unless expressly permitted.
Name searches are just one part of the company registration process, and the free United Kingdom company name check is just the start. 3E Accounting offers competitive company incorporation packages that will take care of the A-Z of registration. Contact 3E Accounting today to speak to our company incorporation specialists.

