How to Check if a Business Name Has Been Registered?
If you have ever heard the phrase “GDPR” and assumed it was something only lawyers needed to understand, you are not alone. At its core, GDPR is a set of rules designed to give individuals greater control over their personal data and to hold organisations accountable for how they handle it. Personal data covers any information that can identify a living person, from a name and email address to an IP address or location data.
The regulation applies to any organisation that processes personal data, regardless of size or sector. A sole trader collecting customer email addresses is subject to the same legal framework as a multinational corporation managing millions of records. The scale of obligations may differ, but the underlying principles are the same for everyone.
How to Find Out if a Business Name Is Already Taken at Companies House
Companies House is the official UK register for limited companies and limited liability partnerships. If you want to know whether a specific name exists as a registered company, the Companies House WebFiling search tool lets you search the entire register for free. You simply type in the name you are considering and the system returns any exact or similar matches.
The search is more nuanced than it first appears. Companies House applies a set of “same as” rules that treat certain characters, words, and punctuation as equivalent, so a name does not need to be an exact duplicate to be rejected. For example, “and” and “&” are treated as identical, and adding “UK” or “Ltd” to an existing name will not make it sufficiently different for registration purposes.
| Companies House Name Check: What Gets Flagged | Why It Matters |
|---|---|
| Identical names | Automatically rejected at registration |
| Names that are “same as” under company name rules | Treated as too similar even if spelled differently |
| Sensitive words without approval (e.g. “Royal”, “Bank”) | Require supporting evidence or regulatory consent |
| Names implying government connection | Subject to additional scrutiny |
| Names already in use by a dissolved company | May still be protected for a period |
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How Can I Know if My Business Name Is Registered as a Trade Mark?
Registering a company name at Companies House and owning a trade mark are two entirely separate things. A business could be operating under a name that nobody has registered as a company, yet still own a trade mark that gives them legal protection over that name across their industry. Checking both registers is the only way to be fully informed before you commit to a name.
The UK Intellectual Property Office (IPO) runs the trade mark register, and you can search it at no cost through the GOV.UK trade mark search. You will need to check not just for identical names but also for names that are confusingly similar, particularly within the same class of goods or services as your business. A trade mark dispute can be costly and disruptive, so this step is worth taking seriously before you print your first business card.
Can You Check if a Company Is Registered with HMRC?
HMRC does not operate a public-facing register in the same way that Companies House does. There is no searchable database where you can look up whether a particular business name is registered for VAT, Self Assessment, or Corporation Tax. HMRC records are private to the business in question, which means you cannot use them to check whether a name is in use by a competitor.
What HMRC registration actually means is that your business has notified the tax authority of its trading activity, not that you have reserved or protected a name. A sole trader called “Sunrise Carpentry” and another sole trader operating under exactly the same name in a different town could both be registered with HMRC simultaneously. If you are specifically concerned about HMRC registration for your own new business, the GOV.UK guide to registering as self-employed covers that process clearly.
| UK Business Name Check: Which Register to Use | Purpose | Public Search Available? | Free to Use? |
|---|---|---|---|
| Companies House | Limited company name registration | Yes | Yes |
| UK IPO Trade Mark Register | Trade mark ownership across all business types | Yes | Yes |
| HMRC | Tax registration (VAT, Self Assessment, PAYE) | No | N/A |
| Intellectual Property Enterprise Court | Trade mark dispute records | Partial | Varies |
How to Check if a Business Name Is Free to Use in the UK
Confirming that a name is not registered as a company or trade mark is a good start, but it is not the whole picture. A name can be “free” on both registers and still cause you problems if it is already associated with an established business that could claim passing off under common law. Passing off is a legal concept that protects businesses from having their reputation or goodwill misappropriated, even without a registered trade mark. It is advisable to also run a general internet search, check social media handles, and look at domain name availability before settling on your choice.
The GOV.UK guidance on choosing a company name sets out the official rules for limited companies in detail, covering everything from prohibited words to the requirements around using your registered name on official documents. For businesses based outside London, the process is identical regardless of where you are in the country. Whether you are setting up a new venture in Farnborough or launching a franchise operation elsewhere in Hampshire, the same national registers apply and are equally accessible online.
How to Check if a Business Name Has Been Registered: What You Need to Know
Getting your business name right from the outset protects you legally, builds credibility with customers, and avoids the cost of rebranding later. The Companies House register, the IPO trade mark database, and a thorough general search together give you a complete picture of whether a name is genuinely available. Skipping any one of these three steps leaves a gap that could create problems down the line.
It is also worth remembering that checking and registering are two separate actions. Running a search confirms availability; it does not reserve the name for you. If you find that your preferred name is clear, the next step is to move quickly, whether that means incorporating at Companies House, applying for a trade mark, or both. Names can be registered by other parties at any time, so acting promptly is important.
Starting a business is an exciting step, and the administrative side of things should not overshadow that. The tools available through GOV.UK and Companies House are free, clear, and designed for business owners to use directly. Once you have confirmed your name is available and taken the necessary steps to protect it, you can focus on what actually matters: building something worth putting your name on.
- Companies House offers a free public search tool to check whether a limited company name is already registered or too similar to an existing one under UK naming rules.
- The UK IPO trade mark register is a separate database that must also be searched, as trade mark protection operates independently of company registration.
- HMRC does not maintain a public business name register; checking with HMRC is relevant to your own tax obligations rather than confirming name availability.
How to Check if a Business Name Has Been Registered: Frequently Asked Questions
The primary place to check is the Companies House register, which is free and publicly accessible. You should also search the UK IPO trade mark database to check for name protection beyond company registration.
Yes, searching the Companies House register costs nothing and requires no account to access. You can search as many names as you need before deciding which to proceed with.
A registered company name is recorded at Companies House and identifies your legal entity, whereas a trade mark gives you exclusive rights to use a name, logo, or phrase in connection with specific goods or services. It is possible to have one without the other.
Two limited companies cannot share an identical or "same as" name on the Companies House register. However, two sole traders can operate under the same trading name simultaneously, since sole traders are not required to register their name anywhere.
Using a name that is identical or confusingly similar to a registered trade mark could result in a legal claim for trade mark infringement. Even without a trade mark, the original business may be able to pursue a passing off claim if they can show established goodwill in that name.
Domain availability is not covered by the Companies House or IPO registers and must be checked separately through a domain registrar such as Nominet, which manages .co.uk and .uk domains. Running this check alongside the official registers gives you a fuller picture of whether the name is practically usable.
No. Registering at Companies House gives you the right to operate under that name as a legal entity, but it does not give you exclusive commercial rights to the name across your industry. A separate trade mark application to the UK IPO is required for that level of protection.
A name associated with a dissolved company may become available, but Companies House applies a two-year restriction period during which a name can be restored. It is advisable to check both the current and historical registers before proceeding. You can find further background on company registration processes via the Companies House Wikipedia page.
Online applications submitted through the Companies House portal are typically processed within 24 hours. Postal applications take significantly longer, so online submission is strongly recommended for speed and convenience.
HMRC does not provide a public register of businesses, so you cannot search for a competitor's registration status. Your own HMRC registration details are accessible through your Government Gateway account at GOV.UK.
Sole traders are not required to register their trading name with Companies House or any other official body. However, they must register with HMRC for Self Assessment if they earn above the trading allowance threshold.
Certain words such as "Royal," "Bank," "Institute," and "Charity" are considered sensitive and require prior approval or supporting documentation before Companies House will accept a name containing them. The full list is available in the Companies House guidance on company names.
Companies House does not offer a name reservation service for limited companies. The only way to secure a name is to complete the full registration, which is why many business owners incorporate quickly once they have confirmed availability.
Yes, a limited company can change its registered name by passing a special resolution and notifying Companies House, with a filing fee payable. The new name must still comply with all standard naming rules and must not conflict with existing registered names.