Choosing a name for your new business is one of the most exciting parts of starting out. But before you print the business cards or build the website, there is one essential step that too many founders skip: confirming that the name you want is actually available to use.
In the UK, company names are registered and protected through a formal process. That means the name you have in mind could already be taken, too similar to an existing one, or restricted by law. Checking early saves you time, money, and the frustration of rebranding before you have even launched.
Can I Check if a Company Name Is Available Before Registering?
Yes, and you absolutely should. Companies House, the UK’s official registrar of companies, maintains a public register of every limited company and limited liability partnership (LLP) that has ever been incorporated in England, Wales, Scotland, or Northern Ireland.
The quickest way to run a check is through the Companies House name availability checker, which is free to use and gives you an instant result. Simply type in your proposed name and the tool will tell you whether it is already registered or too similar to an existing one.
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How to Check if a Company Name Is Still Available on Companies House
The Companies House search tool does more than tell you whether an identical name exists. It also flags names that are considered “the same as” your proposed name under its similarity rules, which account for common words, punctuation, and endings such as “Ltd” or “Limited.”
It is worth running several variations of your intended name through the checker. A name that looks distinct to you may be deemed too similar to an existing registration, so testing alternatives before you commit to one is a sensible habit.
| Common Reasons a Company Name Is Rejected | Example |
|---|---|
| Identical to an existing registered name | “Bright Spark Ltd” already exists |
| Too similar under Companies House rules | “Brightspark Limited” treated as the same |
| Contains a sensitive word without approval | “Royal”, “British”, “Bank” |
| Suggests a connection to government | “UK Government Services Ltd” |
| Contains offensive language | Any name deemed inappropriate |
| Uses punctuation not permitted | Certain symbols not allowed in names |
Where Can I Check if a Business Name Is Already in Use?
Companies House covers incorporated companies, but it does not cover sole traders, partnerships, or businesses that trade under a name different from their registered one. That means a Companies House search alone is not always enough.
To get a fuller picture, it is worth checking the Trade Mark Register held by the Intellectual Property Office (IPO). A business may not be a registered company but could hold a registered trade mark for the name you want, which would prevent you from using it commercially. You can search the IPO’s trade mark database at no cost via the UK Intellectual Property Office.
How to Check if a Business Already Has a Name Registered as a Trade Mark
Trade mark searches are separate from Companies House checks and cover a different type of legal protection. A registered trade mark gives its owner exclusive rights to use that name or logo in connection with the goods or services it is registered for, often across the UK and sometimes internationally.
When searching the IPO database, pay attention to the “classes” that a trade mark covers. These relate to specific industries and types of goods or services. A name might be trade marked in one class but free to use in another, so understanding the classification system is important before drawing conclusions.
| Company Name Check: Which Tool to Use | What It Covers | Cost |
|---|---|---|
| Companies House Name Checker | UK registered limited companies and LLPs | Free |
| IPO Trade Mark Search | UK registered trade marks across all sectors | Free |
| Domain Name Search (e.g. Nominet) | .co.uk and .uk domain availability | Free to search |
| Social Media Handle Search | Platform username availability | Free |
| Google Search | General web presence and informal usage | Free |
You can also check whether Companies House has any guidance on sensitive or restricted words before settling on your final choice, as some terms require written permission or supporting documentation before they can be approved.
Checking Domain and Social Media Availability Alongside Your Company Name
A name may be free on Companies House and clear of trade marks, but that does not mean the website domain or social media handles are available. In today’s market, having consistent branding across your company name, website, and social profiles matters enormously.
Before you finalise anything, search for your preferred .co.uk and .com domains using a registrar such as Nominet or GoDaddy. Run the name through Instagram, X (formerly Twitter), Facebook, and LinkedIn as well. Finding that your ideal name is already in use across these platforms is better discovered now than after you have incorporated.
How Do I Check if a Company Name Is Available: Making the Right Choice for Your Business
Checking whether a company name is available is not a single-step process. It involves Companies House, the IPO trade mark register, domain searches, and a general scan of the web to build a complete picture of whether the name you want is genuinely free to use.
Taking the time to carry out all of these checks before you incorporate protects you from costly legal disputes further down the line. A few hours of research at the start can prevent years of rebranding headaches, particularly if another business has trade mark rights you were not aware of.
Once you are satisfied that your chosen name is clear, you can proceed to register your company through Companies House, either directly or through an authorised formation agent. The registration process is straightforward and can be completed online in a matter of hours.
How Do I Check if a Company Name Is Available: Frequently Asked Questions
Yes, the Companies House name availability checker is completely free and accessible online without creating an account. You can run as many searches as you need before committing to a name.
The fastest way to check business name availability is to run a business name check directly through the Companies House name availability checker, simply type in your proposed name to check company availability instantly. This free tool works as both a company check availability service and, informally, a brand name checker, though for full trade mark protection you should also search the IPO’s trade mark register separately.
To check companies house name availability, use the free online checker at Companies House, this lets you check a business name is available before you commit to registration. You can also check if business name is available under a different structure (such as adding “Ltd” or a location) if your first choice is already taken. A companies house check a business name search only takes a few seconds and gives an instant result.
Companies House will reject your application if the name is deemed the same as an existing registered name under its similarity rules. You will need to choose a sufficiently different alternative before resubmitting.
There is no official reservation system for company names in the UK. The only way to secure a name is to complete a full registration with Companies House.
A sensitive word is a term that implies a connection to government, royalty, or a regulated profession, such as “bank,” “royal,” or “NHS.” Using these words requires prior approval from the relevant authority before Companies House will accept your application. You can find the full list on the GOV.UK guidance page for company and business names.
No, registering with Companies House does not give you trade mark rights. To protect your name commercially, you need to apply for a registered trade mark through the Intellectual Property Office separately.
Technically a sole trader can trade under a similar name, but doing so risks passing off claims if customers are likely to be confused. It is strongly advisable to choose a clearly distinct trading name to avoid legal disputes.
A company name is the legal name registered at Companies House. A trading name is the name a business uses day-to-day, which can be different, though it must not be misleading or infringe on existing rights.
The Companies House online checker returns results instantly. A thorough check including trade marks, domains, and social media handles can usually be completed within an hour.
Yes, the Companies House checker covers companies registered in England, Wales, Scotland, and Northern Ireland. Scottish company names follow the same rules, though Scottish LPs and Scottish partnerships have some distinct considerations. For more background on UK company registration, the Wikipedia page on Companies House provides a useful overview.
Unfortunately there is nothing you can do unless you register first. Company names are granted on a first-come, first-served basis, so acting promptly once you have completed your checks is important.
Not always. Companies House applies similarity rules that go beyond exact matches and may reject names that are phonetically similar or differ only in common words like “the” or “and.” It is best to check directly using the online tool.
Yes, names that are offensive, suggest criminal activity, or contain certain restricted terms are automatically refused. Companies House publishes guidance on prohibited names as part of its company naming rules.
A clear Companies House search reduces your risk significantly but does not guarantee there are no trade mark issues or other legal barriers. A combined check across Companies House, the IPO, and a general web search gives you the most complete picture.
Consider adding a location, descriptor, or different word structure to create a unique variation. For example, if “Apex Solutions Ltd” is taken, a name like “Apex Business Solutions Ltd” or “Apex Solutions Group Ltd” may well be available and registerable.