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Coddan CPM Ltd. – Company Registration Agent in the UK

Follow these six steps to check your proposed UK company name, understand potential restrictions and decide how to proceed with registration.

Step 1
Choose Your Company Name
Step 2
Check Name Availability
Step 3
Review Naming Rules
Step 4
Check Restricted Words
Step 5
Assess Trademark Risks
Step 6
Prepare for Registration

Online Free Business Name Availability Checker

This English, Welsh, Scottish or Northern Irish free. business name checker availability tool is connected directly with the Companies House database and searches the index of all live businesses and businesses dissolved within the last twelve months. Simply enter your preferred names in the company name availability checker search box and click ‘check availability’ to start the scan process.

* Enter preferred business name in the checker tool below



Free company name check for UK companies and LLPs

Want to check if a company name is available? Enter the name you have in mind in Coddan’s free company name checker above. Choose the intended entity type where the form asks for it, review the result and try more than one idea before deciding which name to put on an application. The check is free and you do not need to buy a formation package to explore a name.

A search is useful because it brings an obvious conflict to your attention early. It is not an advance decision from Companies House. The registrar considers the proposed name, the type of entity, any supporting evidence and the application submitted. A name that appears clear in a preliminary search can still require further work or be refused. Equally, a similar result may call for closer examination rather than an automatic conclusion that every possible variation is prohibited.

This guide explains how to use a UK company name search, what a company name availability result can and cannot tell you, and how to move from a promising name to the appropriate registration route. It covers companies limited by shares, companies limited by guarantee, charitable companies, community interest companies, LLPs and the important differences for partnerships and registered societies.

How to use the free company name checker

  1. Decide what you are registering. A private limited company, a company limited by guarantee and an LLP are different legal forms. The ending and the application route depend on that choice.
  2. Enter the proposed name. Start with the main words you want customers and members to recognise. Where the checker asks for an entity type or ending, choose the option that matches the intended registration.
  3. Review the result and close matches. Look beyond a single exact spelling. Consider words placed in a different order, punctuation, small spelling changes and names that sound or look close to yours.
  4. Check the naming rules. A name may raise questions about sensitive wording, an official connection, a protected expression or its required ending even when a preliminary search finds no exact match.
  5. Check rights outside the companies register. If you will use the name publicly, search relevant UK trade marks and other businesses in your market. A Companies House search does not do this work for you.
  6. Apply through the correct route. Incorporation, registration of a limited partnership and changing the registered name of an existing organisation are separate procedures.

The free company name check does not place an order. An application to incorporate or change a registered name is a separate service. Any Coddan service fee, official fee, options and taxes should be checked against the current order page or a written quotation for the work you select. You can also compare a proposed name using the official Companies House name availability checker.

What does a company name availability result mean?

If the proposed name looks available

That is a useful first indication, not a reservation, guarantee or legal clearance. The result can change before your application is accepted, and the registrar may identify a naming issue that a simple search cannot settle. This distinction applies whether you use Coddan’s tool or a Companies House name check. Do not order signs, stationery or a domain solely because the checker gives an encouraging result.

If the checker shows the same or a close name

Read the complete registered name and the entity type. Companies House has rules about a proposed name that is treated as the same as a name on the index. A name that is not technically the same may still be challenged as too like an existing registered name. Adding a generic word, a place name, punctuation or a small spelling change is not a reliable way to overcome a conflict. There are specific rules and exceptions, so the facts should be assessed before an application is made.

If you find a dissolved or inactive company

Do not assume its name can automatically be reused. Check the current record and the applicable naming rules. Other rights, including trade marks and the business reputation attached to a name, may continue independently of a company’s status. If the name is important to your plans, ask for an individual review before relying on it.

If the search finds nothing obvious

That does not prove that a sole trader, general partnership, charity, co-operative society or overseas business is not using a similar name. These may have a different registration system or no Companies House incorporation record under the name by which they trade. Use the register appropriate to the organisation and, where relevant, search the market and trade mark records as well.

Companies House company name rules beyond the free check

The rules are more than an exact-match test. Before you settle on a name, consider the following points in the context of the entity you are forming.

“Same as” names

A company generally cannot be incorporated with a name treated as the same as another name in the registrar’s index. The legal test can disregard certain small differences. A screen showing no identically typed name is therefore not conclusive. Special circumstances and evidence may be relevant to an exception, but do not assume that a letter of consent alone resolves every naming issue.

Names that are “too like” another

Similarity can matter even after a company has been registered. If a complaint is made and Companies House agrees the name is too like an existing one, the company may be directed to change it. The practical question is whether people could mistake the proposed name for another organisation, not simply whether the strings of letters match.

Sensitive words and implied connections

Some words and expressions need approval or supporting evidence. A name must not suggest a connection with the UK government, a devolved administration, a local authority or another specified public body without the necessary authority. Words suggesting a particular status, activity or professional role can also have specific requirements. Check the current Companies House sensitive words guidance before making commitments based on such a name.

Other grounds for refusal or change

Offensive wording and names that give a misleading impression can raise further issues. The registrar’s powers and the applicable restrictions are set out in the current incorporation and names guidance. A name accepted onto the register is not immune from a later challenge under company-name, trade mark or other applicable rules.

Practical approach: make the name distinctive in substance, use the correct legal ending, check any restricted words early and leave time for supporting evidence if your name is unusual.

Choose the right legal form before you finalise the name

A company name checker can help with several Companies House routes, but it does not turn those routes into the same type of organisation. The structure affects the name ending, documents, governance and subsequent filings.

Private company limited by shares

This is the common private company form for a business with shares and shareholders. Its registered name ordinarily ends in Limited or Ltd, with permitted Welsh alternatives where applicable. If you are establishing a trading company, start with the private limited company formation route and examine the package you intend to order. A name search is only the first step in a valid incorporation application.

Company limited by guarantee (CLG)

A CLG has members and guarantee commitments rather than shares. It is often chosen for associations, clubs, community bodies and non-profit organisations. The fact that it is non-profit does not by itself make it a registered charity. Its name normally needs an appropriate limited-company ending unless it qualifies for an exemption from using “Limited” under the applicable rules and articles. See the dedicated non-profit company name check and explore Coddan’s CLG formation options before deciding the wording and constitution.

Charitable company limited by guarantee

A charitable company is incorporated at Companies House, while charity status and any separate charity registration involve the relevant charity regulator. A proposed name containing “charity” or “charitable” may require the appropriate approval for company registration. Charity-name rules and existing charity names should be checked separately. The applicable regulator and procedure depend on where the charity is established or operates. Read Coddan’s charitable company name guidance.

Community interest company (CIC)

A CIC is a company formed for community benefit under its own regime. It has a prescribed CIC name ending and its application involves the CIC Regulator as well as Companies House. It is not interchangeable with a charitable company. If community interest status is part of your plan, choose that structure before deciding which name and application documents to submit. See the official CIC guidance for the current requirements.

Limited liability partnership (LLP)

An LLP is a separate legal entity incorporated at Companies House, with members rather than company shareholders and directors. Its name must use an appropriate Limited Liability Partnership or LLP ending, with the relevant Welsh forms where applicable. It follows LLP naming guidance, which should be checked for sensitive words and other restrictions. Use the LLP-specific name-check route, then review Coddan’s LLP formation service if you are ready to proceed.

Limited partnership (LP) and Scottish limited partnership (SLP)

A limited partnership is registered with Companies House under a different legal regime from an LLP. Its partners, documents, naming rules and filing route require separate consideration. A Scottish limited partnership has distinct legal characteristics and obligations. An apparently clear company-name result should not be treated as approval to register an LP or SLP. If you are comparing these structures with an LLP, tell Coddan which form you intend and ask for the applicable LP or SLP process.

General partnership and sole trader

An ordinary general partnership is not incorporated as an LLP or limited company merely because its partners use a business name. A sole trader also does not register a company name for that business through a Companies House incorporation. Their trading-name rules and tax obligations differ. You may still search existing company names and trade marks to identify potential conflicts, but a company-name checker cannot approve or register an ordinary partnership or sole-trader name.

Co-operative society and co-operative company

“Co-operative” describes a way of organising people; it does not identify one universal registration route. A registered co-operative society is registered with the Financial Conduct Authority and appears on the FCA Mutuals Public Register. A co-operative organised as a Companies Act company follows its chosen company form at Companies House. Check the intended legal structure and the relevant register before relying on a company-name result.

England and Wales, Scotland, or Northern Ireland

Companies House is the UK registrar for companies and LLPs, but the incorporation application identifies a registered jurisdiction. England and Wales, Scotland and Northern Ireland are not interchangeable registered-office locations. The company or LLP needs an appropriate registered office in its jurisdiction, and a later change of address does not simply transfer an existing entity from one UK jurisdiction to another.

A preliminary name search is therefore only one decision in the formation process. Decide the legal form, the jurisdiction, the registered office and the people or corporate bodies involved before submitting the final application. A client living abroad can also form a UK entity where the requirements are met, but overseas residence does not remove UK naming, address, identity or filing requirements. If you are based outside the UK, review Coddan’s overseas-client company formation information or contact us about the intended structure.

References on this page to the UK register do not include the Republic of Ireland. A company incorporated there has a separate registrar and naming process.

Company name search, trading name, domain and trade mark: four different checks

A business may use its registered company or LLP name in contracts and filings and a different trading name in its public marketing. A domain name identifies an internet address. A trade mark can protect a brand for particular goods or services. None of these checks replaces the others.

Registered company or LLP name

Registration places the legal name on the relevant Companies House register. It does not give the business an unrestricted right to use the same expression in every market or every form of advertising. Name-registration rules and trade mark rights operate separately.

Trading name

A company may trade under a name different from its registered name, subject to business-name and disclosure rules and the rights of others. A trading name is not a substitute for a compliant registered legal name. If you plan to use several public brands, assess those separately from your incorporation application.

Trade mark

The UK Intellectual Property Office trade mark search can help identify existing marks. The scope of rights depends on the mark, goods or services, territory and other facts. An identical registered company name and trade mark can raise a real conflict; an absence of an exact match does not provide a complete infringement opinion. Seek qualified advice where the brand is valuable or a search reveals a close mark.

Domain and social handles

A domain or social-media handle may be useful for your project, but availability does not establish a right to a company name or trade mark. Conversely, a registered company name does not automatically allocate the matching domain. Make each check for the decision it can actually inform.

A practical checklist before you commit to a name

  • Easy to recognise: Can a customer, member or funder identify and spell it after hearing it once?
  • Distinctive: Does it stand apart from businesses already active in the same field, rather than relying on a small addition to a familiar name?
  • Accurate: Does it describe or suggest your activity without claiming an official role, protected status or qualification you do not hold?
  • Suitable ending: Does it use the correct company, CIC or LLP ending, or is a properly supported exemption being sought?
  • Suitable structure: Have you chosen between a share company, CLG, CIC, LLP, LP, registered society or another form before selecting the final version?
  • Future use: Will the name still make sense if the organisation expands its work, location or membership?
  • Other rights: Have you considered relevant trade marks and existing market use rather than relying only on Companies House?
  • Practical identity: If important to you, have you checked a suitable domain and how the name will appear on documents and signs?

Try several genuine alternatives. A distinctive second choice is often more useful than many versions of a name that is already close to an established organisation.

How Coddan can help after the free check

The free search lets you explore possible names without buying a formation package. When you are ready, Coddan can help you select the correct available formation or name-change service and identify any naming issue that needs more than an automated response. That may include a sensitive expression, a CLG exemption question, a charitable-company name, a CIC ending, an LLP name or a case involving an existing company.

Tell us the proposed name, legal form, registration jurisdiction and whether this is a new entity or a change to an existing one. If you found a similar company or trade mark, include its details. We can explain the administrative route and the scope of any Coddan work before you order. Where the issue requires a legal opinion on competing rights, a dispute or specialist charity or trade mark advice, that should be considered separately.

Coddan serves UK and overseas clients for appropriate UK formations. The same Companies House decision-making applies regardless of the client’s residence. We do not promise that a searched name will be approved, that a trade mark is clear or that an application will be completed within a fixed number of hours.

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Free company name check: practical questions and answers

How can I check company name availability for free?

Enter a proposed name in Coddan’s checker above and select the intended legal form where asked. Review close results and the naming rules before applying. You can also use the free official Companies House checker. These searches help with registered names; they do not clear trade marks or reserve the name.

Is Coddan’s company name checker free?

Yes. Using the name checker above to explore a proposed name is free. A company or LLP formation, a name-change filing and any additional service are separate. Review the current package or quotation before ordering; a free search does not include a paid application.

Does a clear result mean Companies House has approved my name?

No. It is a preliminary result. Companies House considers the submitted application and the naming rules. A name may need evidence or approval for a sensitive expression, and other issues can arise even when no exact match appears.

Can Coddan reserve my name by running the checker?

No. The search does not reserve it. An accepted incorporation or name change establishes the registered name of the entity. Forming an entity before trading is a separate decision with ongoing obligations.

Can two companies have names that look almost the same?

The “same as” and “too like” rules need separate assessment. Similarity does not always produce the same legal outcome, but an apparently minor addition may be insufficient. A later complaint can also lead to a direction to change a registered name. Check close matches carefully.

What if the company with my preferred name has been dissolved?

Check the current register and applicable rules. Dissolution is not a universal clearance of the name, nor does it extinguish all outside rights or market confusion. Do not assume that a particular twelve-month period answers every case.

Will the checker find a sole trader or ordinary partnership?

Not comprehensively. These businesses do not appear on the Companies House register simply because they use a trading name. Their names may still be relevant to your choice, so broader market and trade mark searches can be sensible.

Can I check an LLP name?

Yes. Use the LLP-specific name-check page and follow LLP naming guidance. A general partnership and a limited partnership have different registration and naming routes.

Does the checker approve a co-operative society name?

No. A registered co-operative society is on the FCA Mutuals Public Register. A company operating on co-operative principles may instead be incorporated at Companies House under its chosen company form. Identify which structure you mean before choosing a registrar.

Does a CLG have to include “Limited”?

Ordinarily it uses the appropriate company ending, but a qualifying company limited by guarantee may be exempt under the applicable conditions. The articles and proposed activities matter. Do not remove the ending from the application merely because the CLG is non-profit.

Can I include “charity” or “charitable” in a company name?

These expressions require particular attention. In England and Wales, using them in a company-name application may require Charity Commission approval; different charity regulators and rules can apply elsewhere in the UK. Charity status and the separate charity-name regime must also be considered. The correct process depends on the organisation and jurisdiction.

What is the difference between a CIC and a charity?

A community interest company follows the CIC regime and prescribed name ending. It is not a registered charity simply because it has a community purpose. Choose the legal form first and then apply its naming rules.

Can I use a name without “Ltd” for a private company limited by shares?

A private company limited by shares ordinarily uses “Limited” or “Ltd”, or the permitted Welsh form where applicable. The CLG exemption should not be applied to a share company by analogy.

Does registration protect my brand?

It registers the legal name under company or LLP naming rules; it does not automatically register a trade mark or settle disputes about another party’s rights. Search the UK trade mark register if you plan to build a brand around the name.

Can my trading name differ from my registered company name?

Yes, subject to the applicable business-name, disclosure and third-party rights rules. Keep the distinction clear on documents: the registered company or LLP remains the legal entity behind the trading name.

Is a domain-name search part of Companies House approval?

No. Domains are allocated through separate registration systems. A matching domain can be useful, but owning it neither proves your company name can be registered nor resolves trade mark rights.

Can a non-UK resident check and register a UK company name?

The free search can be used from abroad. A non-UK client can pursue an appropriate UK formation, subject to the applicable incorporation, address, identity and other requirements. The registrar still decides whether the proposed name is acceptable.

Can I choose Scotland or Northern Ireland after checking a name?

The UK company-name search is a starting point, but the final application also specifies its registered jurisdiction and needs an appropriate registered office there. Decide that jurisdiction before filing.

Can I change an existing company’s name with the checker?

No. The checker helps you research a proposed new name. The company must complete the correct approval and filing procedure. The name does not change on the register merely because you have searched it.

What if a sensitive word is central to the name?

Read the current official guidance and identify the relevant approval or supporting evidence before submitting the application. Tell Coddan the exact wording and legal form if you want us to assess the administrative route for an available service.

What if the name is disputed or a trade mark search finds a close result?

Pause before spending money on the identity. The legal question depends on the prior right, similarity, activities and intended use. Coddan can help distinguish the formation filing from the rights issue, but a disputed trade mark or passing-off question may need specialist legal advice.

What if I want to check information about an existing company?

Use the Companies House Find and update company information service to inspect its registered name, number, status, registered office and publicly available filings. Checking an existing company’s record is different from deciding whether your own proposed name will be accepted.

Ready to take the next step?

Run the free company name check above. If your preferred name looks promising, decide the legal form and check the points that the search cannot settle. You can then choose a Coddan formation service or ask us about a complex name or an existing-entity change. We will confirm the work and current price for the route you select before proceeding.

Contact Coddan about your proposed name