Company name vs trading name: what is the difference

The registered company name: your legal identity

Your registered company name is the official, legal name of the company as recorded at Companies House when you incorporate. For a private limited company it must usually end in 'Limited' or 'Ltd', or the Welsh equivalents 'Cyfyngedig' or 'Cyf' for companies registered in Wales. This is the name that appears on the public register and the name the law treats as the company itself.

There are strict rules on what this name can be. It cannot be the 'same as' an existing registered name, where names are treated as the same if they differ only in punctuation, certain special characters, similar-looking words or common company-name words. GOV.UK gives the example that 'Hands UK Ltd' and 'Hand's Ltd' are treated as the same as 'Hands Ltd'. You may also have to change your name if someone complains and Companies House agrees it is 'too like' a name registered before yours.

The name cannot be offensive, and it cannot contain a 'sensitive' word or expression, or suggest a connection with government or local authorities, unless you get permission. GOV.UK gives the example that you would need approval from the Department for Business and Trade to use the word 'Accredited'. Incorporating a company does give you a real benefit: as Companies House puts it, doing so 'will prevent other businesses from registering the same, or a very similar, company name to yours'.

It helps to see where these controls come from. The prohibition on misleading names sits in the Companies Act 2006, section 1198, headed 'Name giving misleading indication of activities', which stops a business trading under a name that gives so misleading an indication of the nature of its activities as to pose a risk of harm to the public. That principle runs through both company names and trading names, so the same care applies whichever name a customer sees first.

The trading name: the name your customers see

A trading name, also called a business name, is a name you use to run and market the business that is different from your registered company name. Companies House states plainly: 'You can also trade using a different name to your registered name. This is known as a business name or trading name.' Many businesses do this, for example running several brands from one registered company, or wanting a shorter, more memorable public name than the formal legal one.

Trading names have their own restrictions. A business name must not include 'limited', 'Ltd', 'limited liability partnership', 'LLP', 'public limited company' or 'plc', because those words are reserved for the relevant registered entities. It must not be the same as an existing trade mark, and it cannot contain a sensitive word or expression unless you get permission. If your business name is too similar to another company's trade mark, you may have to change it if someone makes a complaint.

Sole traders sit under the same broad principle. GOV.UK confirms a sole trader can 'trade under your own name, or you can choose another name for your business', and that a sole trader's business name must not include 'limited', 'Ltd', 'limited liability partnership', 'LLP', 'public limited company' or 'plc', must not be offensive, and must not be too similar to another company's trade marked name. These business-name rules sit in Part 41 of the Companies Act 2006, headed 'Business names', which applies to persons carrying on business in the United Kingdom under a business name.

A trade mark: the only thing that protects your brand

This is the point most often misunderstood. Companies House is direct about it: 'Registering a company name does not automatically protect it by trade mark law.' Registering at Companies House stops others registering the same or a very similar company name, but it does not stop another business from using your brand on their products or services. For that, you need a registered trade mark, which is administered by the Intellectual Property Office (IPO), a separate body from Companies House.

A trade mark is described by Companies House as 'a sign which can distinguish your goods and services from those of your competitors'. It can be more than a name: it can be words, sounds, logos, colours, or a combination of these. Once registered, a UK trade mark lasts 10 years and must be renewed every 10 years to stay in force. Registration lets you take legal action against anyone who uses your brand without permission, including counterfeiters, use the registered trade mark symbol next to your brand, and sell and license your brand.

Not everything can be registered as a trade mark. According to GOV.UK it cannot describe the goods or services it relates to, cannot be too common and non-distinctive, cannot be offensive, cannot be misleading, cannot be a generic shape associated with your business, and cannot make use of national flags, official emblems or hallmarks you do not have permission to use. As Companies House puts it, if you want to stop people from trading under your business name, you need to register your name as a trade mark.

Comparing the three at a glance

Because these three labels overlap in everyday speech, it helps to line them up side by side. The table below sets out what each one is, whether it protects your brand, the main rules attached to it, and where it is registered.

The key takeaway is that a registered company name and a trading name are about identity and permitted use, while a trade mark is about ownership and enforcement. A business can have all three, and for a growing brand that is often the sensible position.

What you must display and where

Whatever trading name you use, the law still requires your registered company name to be shown. Under the Companies Act 2006, section 82, headed 'Requirement to disclose company name etc', the Secretary of State makes regulations requiring companies to display and state specified information, and those regulations must always require disclosure of the company's name. GOV.UK translates this into practical duties for limited companies.

You must display a sign showing your company name at your registered company address and wherever your business operates, though if you run your business from home you do not need to display a sign there. The sign must be easy to read and to see at any time, not just when you are open. You must also include your company's name on all company documents, publicity and letters.

On business letters, order forms and websites you must show more than the name: the company's registered number, its registered office address, the part of the UK where the company is registered (England and Wales, Scotland, or Northern Ireland), and the fact that it is a limited company, usually by spelling out the full name including 'Limited' or 'Ltd'. If you trade under a business name, individuals and partnerships have their own disclosure duties too under Part 41, Chapter 2 of the Companies Act 2006, which applies to an individual or partnership carrying on business in the United Kingdom under a business name.

How to choose and protect a name in the right order

The safest sequence is to check availability and conflicts before you commit, register the company, decide on any separate trading name, and then protect the brand with a trade mark if it matters commercially. Doing it in that order avoids the common trap of building a brand you cannot defend.

Remember that these checks span two different registers. Companies House tells you whether a company name is available and free of same or too like conflicts. The Intellectual Property Office tells you whether a name clashes with an existing trade mark, which is a separate risk that company registration alone will not surface.

Budget matters here too, because a trade mark application carries a fee and the protection only lasts for a fixed term before renewal. If you plan to invest heavily in a brand, applying early is usually worthwhile, since a registered trade mark is what lets you take legal action against copycats and counterfeiters rather than merely objecting after the fact. You can compare the cost of getting the structure right at the outset on our pricing page and decide how much protection your brand needs from day one.

Conclusion

The short version is this: a registered company name is your legal identity, a trading name is the public name you choose to use, and a registered trade mark is the only one of the three that actually protects your brand from being copied. They are governed by different rules and, in the case of trade marks, by a different body entirely. Treat them as separate decisions rather than one.

Before you commit to a name, check both the Companies House register and the Intellectual Property Office register, make sure your chosen trading name avoids the reserved and sensitive words, and remember that your registered company name still has to appear on your signage, letters, order forms and website even when you trade under something else. If your brand has commercial value, a trade mark is what turns a name you use into a name you own. If you want a hand getting the structure right from day one, see how Nasara Connect supports company formation.

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