How to Check if a Name Is Taken for a Company
Choosing the right name for your business is one of the most important decisions you will make, and it has to be done before almost anything else. Before you print a single business card, build a website, or open a bank account, you need to know whether the name you want is actually available to use.
Fortunately, finding out how to check if a name is taken for a company in the UK is a straightforward process, and you do not need a solicitor or an accountant to do it. What you do need is a clear understanding of where to look, what the rules say, and what to do with the information once you have it.
How to Check if a Company Name Is Available Using Companies House
The first and most important place to start is Companies House, the UK’s official registrar of companies. Every limited company and limited liability partnership registered in England, Wales, Scotland, or Northern Ireland is listed on the Companies House register, and the search tool is free to use without creating an account.
To carry out a search, visit the Companies House website and type your proposed name into the search bar. The results will show any existing companies with that name or names very similar to it, including dissolved companies, which can still block your registration in certain circumstances. It takes under a minute, and it is the single most reliable way to begin the process of confirming whether your chosen name is free.
Key Differences Between Name Check Methods
| Check Method | What It Covers | Cost | Official? |
|---|---|---|---|
| Companies House Web Search | Registered UK company names | Free | Yes |
| Intellectual Property Office (IPO) | Registered UK trade marks | Free to search | Yes |
| Domain Name Search (e.g. Nominet) | Website domain availability | Free to search | No |
| Google / Social Media Search | Brand presence and reputation | Free | No |
| Formation Agent Software | All of the above in one | Varies | No |
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What Rules Determine Whether a Company Name Is Taken?
Knowing where to search is only half the story. Companies House applies a specific set of rules when assessing whether a proposed name is acceptable, and understanding them helps you interpret your search results more accurately.
The most fundamental rule is that no two companies can have the same name on the register. However, Companies House also uses a “same as” test, which means it ignores certain words and characters when comparing names. Words like “the”, “and”, punctuation marks, and common business suffixes such as “Ltd” or “Limited” are stripped out before comparison. This means “The Green Heron Consulting Ltd” and “Green Heron Consulting Limited” would be considered the same name, even though they look different at first glance.
How to Check if a Company Name Is Still Available After a Trade Mark Search
Clearing a name on Companies House does not mean you are free to use it without restriction. A name that is not registered as a company can still be protected as a trade mark, and using it could expose you to a legal claim from the trade mark owner.
The UK Intellectual Property Office provides a free trade mark search tool that lets you search the UK Trade Marks Register by keyword. It is worth running this search before settling on any name, particularly if you plan to operate nationally or build a recognisable brand. A name that is clear on Companies House but protected as a trade mark in your sector is not truly available, and discovering that after you have invested in branding can be a costly mistake.
Common Reasons a Company Name Search May Be Rejected by Companies House
| Reason for Rejection | Example | What to Do |
|---|---|---|
| Name already registered | “Sunrise Builders Ltd” exists | Choose a distinct variation |
| “Same as” name match | Ignores “the”, punctuation, Ltd/Limited | Test multiple variations |
| Sensitive words used without permission | “Royal”, “British”, “Chartered” | Apply for prior approval |
| Name is offensive | Flagged by Companies House | Choose an alternative |
| Name implies government connection | “National” or “Authority” | Seek approval or avoid |
| Name too similar to existing trade mark | Protected brand name | Run an IPO trade mark search |
What Happens if a Company Name Has Been Taken?
If your search reveals that a name is already in use, you have a few practical options. The simplest is to choose a different name altogether, perhaps by adding a descriptive word, a location, or a different suffix that genuinely differentiates your business from the existing one. This is often the cleanest route, particularly for new businesses that have not yet built any equity in the name.
In some cases, you may be able to challenge a registered name if you believe it was registered in bad faith or is too similar to a name you have been trading under. The Companies House Company Names Adjudicator handles disputes of this kind, and the process involves submitting a formal application with evidence. This route is less common for entirely new businesses, but it is worth knowing the mechanism exists if you are protecting an established trading name.
Checking Domain and Social Media Availability Alongside Your Company Name Search
Registering your company name with Companies House protects it as a legal entity, but it does not give you any automatic rights to the matching domain name or social media handles. These need to be secured separately, and doing so quickly is important once you have confirmed the name is available.
For domain names, Nominet is the official registry for .co.uk and .uk domains, and most domain registrars will show you availability through their own search tools. Checking Twitter, Instagram, LinkedIn, and Facebook at the same time gives you a full picture of whether the name is truly yours to build a brand around. Many founders in fast-moving sectors, from tech start-ups to independent tradespeople across the country, have found it useful to run all these checks simultaneously before making a final decision, simply to avoid the frustration of securing a company name only to find the matching domain has gone.
How to Check if a Name Is Taken for a Company and Then Register It
Once your checks are complete and the name is confirmed as available across all the relevant registers, you are ready to register. The fastest route is through Companies House directly, where registering online costs £50 and is typically processed within 24 hours. You will need to provide details of your registered office address, directors, and shareholders at the same time.
It is worth noting that Companies House processes registrations on a first-come, first-served basis. If you have done your research and found a name that is available, there is nothing stopping another person from registering it in the meantime. Once you are certain about your name, act promptly. Thorough preparation followed by a confident, timely submission is the most reliable way to secure the name you want.
Checking whether a company name is taken is not a complex process, but it does require checking the right sources in the right order. Companies House handles the legal registration, the IPO covers trade mark protection, and domain and social media searches round out the picture. Taking the time to work through each step before you commit to a name protects you from rebranding costs, legal disputes, and the practical headache of having to start again.
- Always search Companies House first using the free name availability tool, paying attention to the “same as” rules that strip out common words before comparing names.
- Run a parallel trade mark search on the UK Intellectual Property Office database, especially if your business will operate at scale or in a competitive sector.
- Secure your domain name and social media handles immediately after confirming availability, as Companies House registration does not grant rights to these automatically.
How to Check if a Name Is Taken for a Company: Frequently Asked Questions
You can search the Companies House register for free at the Companies House website, which lists every active and dissolved company in the UK. Simply enter your proposed name into the search tool and review the results before proceeding with registration.
Yes, searching the Companies House register costs nothing and does not require you to create an account. You can carry out as many searches as you like before deciding on a name.
The "same as" test is a comparison rule that strips out certain words, punctuation, and suffixes before checking whether two names are identical. This means names that look different on the surface may still be treated as the same by the register.
In most cases yes, but dissolved company names can still block registration for a period, particularly if the dissolution is recent or a related trade mark is still active. It is always worth checking both the register and the IPO database before assuming a dissolved name is available.
A company name is a legal registration with Companies House that identifies you as a corporate entity, while a trade mark is a right that protects a brand name, logo, or slogan from use by others in a specific sector. You can learn more about how trade marks work on the Wikipedia page for trade marks.
No, company registration and domain name registration are entirely separate processes. You will need to purchase your preferred domain through a registrar such as those listed on the Nominet website.
Certain words such as "Royal", "British", "National", "Chartered", and "Authority" require prior approval or supporting documentation before they can be included in a company name. The full list of sensitive words is published on the GOV.UK sensitive company name guidance page.
Online registration through Companies House typically takes between 24 and 48 hours, though many applications are approved on the same working day. Postal applications take significantly longer, usually several weeks.
Yes, unless you hold a registered trade mark, a sole trader name does not have automatic legal protection against someone else registering a similar or identical company name. Registering a trade mark through the IPO is the most effective way to protect a trading name formally.
Start by adjusting the name slightly, for instance by adding a location, a descriptive word, or a different ending, to create a distinct variation. If you believe the existing name was registered to block you or in bad faith, you can raise a dispute with the Companies House Company Names Tribunal.
No, a clear Companies House search only confirms the name is not registered as a UK company. You still need to check the trade mark register, domain availability, and consider whether the name could infringe on an established brand's reputation.
Yes, Companies House allows names that are similar as long as they do not fall within the "same as" rules. However, a very similar name in the same sector could still lead to a trade mark or passing off dispute, so it is wise to choose something clearly distinct.
A company name adjudicator is an independent official who considers disputes about company names, particularly where a name has been registered opportunistically or in a way that causes harm to another business. Cases are handled by the Company Names Tribunal, which operates under Companies House.
Companies House does not offer a formal name reservation service, which means a name remains available to anyone until a registration is successfully completed. The only reliable way to secure a name is to complete the registration process as soon as you have confirmed availability.