Sole Trader Business Names in 2026: The Rules, Disclosure and How to Protect Your Name

You can trade as a sole trader under your own name or under a business name you've chosen, and you don't need anyone's permission to start using it. But there are rules about what the name can contain, what you must tell customers when you use it, and whose rights you might be stepping on. This guide covers the law in England, Wales, Scotland and Northern Ireland as of October 2026: the banned and sensitive words, the disclosure duties under the Companies Act 2006, how to protect your name with a trade mark (fees rose in April 2026), and how to avoid a passing off claim that forces a rebrand. It ends with a worked check you can run on your own shortlist.

Quick answer

A sole trader can use any business name that doesn't include Ltd, LLP or plc, isn't offensive, doesn't use a sensitive word without approval, and doesn't copy a registered trade mark or another business's reputation. There's no register of sole trader names: tell HMRC when you register, put your own name and address on invoices and letters, and register a trade mark if you want exclusive rights.

• No fee and no registration needed to use a trading name

• Invoices must show your full name and an address for service

• Trade mark: £205 online for one class, £60 per extra class

• Check Companies House, the trade mark register and domain names before you print anything

Your own name or a business name

The Companies Act 2006 draws the line. If you trade under your surname, with or without your first names or initials, that isn't a "business name" in the legal sense. "J Patel", "Jaya Patel" or "Patel" are all your own name. Anything else is a business name: "Patel Plumbing", "JP Heating Services" or "Voltwise Electrical". As soon as you use one, Part 41 of the Act applies and you take on disclosure duties.

Plenty of sole traders stay with their own name, particularly in trades and professions where customers hire the person. A business name helps when you want to sound bigger than one person, describe what you do in the name itself, build a brand you might later sell, or keep your personal name off your marketing. It doesn't create a separate legal person: you're still personally responsible for the business's debts and contracts, whatever name is on the van. If you want that separation, you need a limited company, which our sole trader vs limited company guide compares.

Unlike company names, sole trader names aren't registered anywhere. Companies House doesn't keep a list of them, and there's no fee to "register" a trading name in the UK, so be wary of websites offering to do it. When you register as a sole trader with HMRC for Self Assessment, you give your business name, but that's just for HMRC's records. It doesn't stop anyone else using the same name.

Words you can't use

GOV.UK sets out the basic rules for sole traders. Your business name must not:

• include "limited", "Ltd", "limited liability partnership", "LLP", "public limited company" or "plc", or anything else that suggests a different legal form;
• be offensive;
• be the same as an existing trade mark, or so similar that people would confuse them.

Companies House's guidance on business names adds that a name mustn't give a misleading indication of what the business does, for example implying a regulated activity you don't carry on. The aim behind all of these is the same: people dealing with you should know who they're dealing with and what kind of business it is. A sole trader calling themselves "Smith Builders Ltd" misleads customers into thinking they have a company with its own assets to sue.

Sensitive words that need approval

Some words and expressions can only be used in a business name with prior approval, because they suggest official status, a regulated activity or a connection with government or the Crown. Companies House publishes the full list in Annex A of its incorporation and names guidance, and it applies to business names used by sole traders and partnerships as well as to company names. Using a sensitive word without approval is an offence.

For most words, you first get a letter or email of non-objection from the body named in the list, then send it to Companies House with a letter asking to use the name. Some examples:

A second group of words, such as England, Scotland, Wales, Northern Ireland, British, National, European, International, Association, Institute, Council or Authority, can be used only if the name doesn't imply something that isn't true, such as national pre-eminence or a regulatory role. For national words, Companies House's guidance says a business name's principal place of business must be in the relevant nation. If your name contains one of these, read the Annex entry before you spend money on branding.

Separately from naming law, many professional titles are protected by their own legislation. You can't call yourself a "dentist", "solicitor" or "architect" in a business name just by getting naming approval: you have to be registered with the relevant regulator.

What you must show on invoices, letters and at your premises

When you trade under a business name, Part 41 of the Companies Act 2006 requires you to disclose who's behind it. The duty exists so customers and suppliers can identify the legal person they're dealing with and serve legal documents on them. As Business Companion (the Chartered Trading Standards Institute's guidance service) summarises it, you must disclose:

• your full name (for a partnership, the names of all the partners);
• a UK address where the business can be contacted and documents can be served.

These details must appear legibly on:

• business letters;
• written orders for goods or services;
• invoices and receipts;
• written demands for payment of debts.

You must also display them prominently at any premises where you deal with customers or suppliers, and give them in writing immediately to any customer or supplier who asks. Separate e-commerce rules require your name and geographic address on your business website. Failing to comply without a reasonable excuse is a criminal offence under section 1205.

A common way to meet the documents rule is a footer line on every invoice and letterhead, for example: "Voltwise Electrical is a trading name of Jaya Patel. Address for service: [your full UK address]." The premises notice can say the same thing, headed something like "Business names: particulars of ownership". If you're VAT-registered, your invoices also need your VAT number and the other details in our VAT invoice requirements guide. Our free invoice generator has a field for your trading name and your own name.

Your bank account should match. Ask your bank whether it can show the account in a "Jaya Patel t/a Voltwise Electrical" style, so customers can pay the name on your invoice; see our business bank account guide.

Protecting your name: trade marks

Using a name gives you no exclusive right to it. If you want to stop others using the same or a confusingly similar name for similar goods or services, register it as a UK trade mark with the Intellectual Property Office (IPO). Registration covers the whole UK.

UK trade mark costs and timings

£205

Online application, one class

Was £170 before 1 April 2026

£60

Each additional class

about 3 to 4 months

Typical time to register

If no objections

10 years

Protection before renewal

Trade marks are registered for specific classes of goods and services. A gardener might choose class 44 (horticulture and gardening services), while a sole trader selling candles online might need class 4 (candles) and class 35 (online retail). An online application with three classes costs £205 + 2 × £60 = £325. If you're unsure your mark will be accepted, the Right Start option lets you pay £125 plus £30 per extra class for an initial assessment, then pay the same again within 28 days to continue.

Registering a trade mark

1. 1

   Search the register

   Use the IPO's free trade mark search to look for identical and similar marks in your classes.

   Search for a trade mark
2. 2

   Choose your classes and wording

   Pick the classes and terms that describe what you actually sell. Wider isn't always better: unused terms can be challenged.

3. 3

   Apply online

   Pay £205 for one class plus £60 per extra class. Your application is published straight away.

4. 4

   Examination

   The IPO sends an examination report within about 2 to 3 weeks. You get 2 months to resolve any objections.

5. 5

   Publication and opposition

   The mark is published for 2 months, during which anyone can oppose it. If no one does, it's registered.

A registered mark lasts 10 years and can be renewed indefinitely. Once it's registered you can use the ® symbol. Before then, use ™ if you like, which has no legal effect but signals that you claim the name. Using ® on a mark that isn't registered is a criminal offence under section 95 of the Trade Marks Act 1994.

Not every name can be registered. Purely descriptive names, like "Quality Plumbing" or "Leeds Window Cleaning", are usually refused because other traders need to use those words. That's a good reason to choose something distinctive at the start: an invented or unexpected name is easier to protect than a description of what you do.

Passing off and other people's names

Even an unregistered name can be protected by the common-law tort of passing off. A business that has built up a reputation under a name can sue a newcomer who uses a similar name in a way that misleads customers. To win, it has to show three things:

1. Goodwill: a reputation attached to its name among customers;
2. Misrepresentation: your name leads, or is likely to lead, customers to think you're connected with it, whether you meant to or not;
3. Damage: it has lost, or is likely to lose, business or reputation as a result.

Passing off is local and factual. A dog groomer called "Pampered Paws" in Plymouth is unlikely to harm one with the same name in Perth. But in the same town or online, where customers find you through the same search results, the risk is real. Losing a case can mean a court order to stop using the name, a damages award and the other side's legal costs, on top of the cost of rebranding. It's no answer to say you didn't know the other business existed if customers are in fact being confused.

A registered trade mark gives its owner even stronger rights: they don't have to prove goodwill, only that you're using an identical or similar sign for identical or similar goods or services in a way likely to cause confusion. That's why GOV.UK says a sole trader's name shouldn't be the same as an existing trade mark, and that you may have to change it if someone complains.

Registered trade mark vs relying on passing off

	Registered trade mark	Passing off (unregistered)
Cost to get	£205 + £60 per extra class	Nothing up front
What you must prove	Your registration and a confusingly similar use	Goodwill, misrepresentation and damage
Area covered	Whole UK	Where your reputation actually is
Can use ®	Yes	No (™ only)
Cost to enforce	Lower: rights are on the register	Higher: evidence of reputation needed

Cost to get

Registered trade mark

£205 + £60 per extra class

Passing off (unregistered)

Nothing up front

What you must prove

Registered trade mark

Your registration and a confusingly similar use

Passing off (unregistered)

Goodwill, misrepresentation and damage

Area covered

Registered trade mark

Whole UK

Passing off (unregistered)

Where your reputation actually is

Can use ®

Registered trade mark

Yes

Passing off (unregistered)

No (™ only)

Cost to enforce

Registered trade mark

Lower: rights are on the register

Passing off (unregistered)

Higher: evidence of reputation needed

Worked example: checking a shortlist

Jaya, a newly qualified electrician in Leicester, has three names on her shortlist. She runs each through the same checks before ordering van livery.

The naming check

0/7

• No Ltd, LLP or plc, and nothing that suggests a different legal form
• No sensitive word from Companies House Annex A, or approval obtained first
• Search the IPO trade mark register for identical and similar marks in your classes
• Search the Companies House register for similar company names
• Search online and on maps for businesses using the name nearby or in your trade
• Check the domain name and social media handles
• Say it aloud: is it easy to spell from hearing it on the phone?

Share Print

"Leicester Electrical Services". No banned or sensitive words, and lots of similar names exist, so passing off risk is low. But it's descriptive, so she couldn't register it as a trade mark, and she'd struggle to stand out online.

"Royal Spark Electrical". "Royal" is a sensitive word needing government approval, and she has no royal connection to justify it. She drops it.

"Bright Spark Electrical". Suppose her trade mark search finds a similar mark already registered by another business for electrical installation services. Using it would risk an infringement claim, so she drops it.

"Voltwise Electrical". Suppose her checks find no sensitive words, nothing similar on the trade mark register in class 37 (building and electrical installation services), no similar company names at Companies House, and a free domain. She chooses it, adds "Voltwise Electrical is a trading name of Jaya Patel" with her address to her invoice template and website, and applies for a trade mark in class 37 for £205. If there are no objections, she should have a registered mark within about about 3 to 4 months.

From shortlist to trading name

Step 1

Shortlist 3–5 names

Step 2

Banned and sensitive word check

Step 3

Trade mark and Companies House search

Step 4

Domain and local search

Step 5

Pick and disclose

your name + address on invoices

Step 6

Optional trade mark

£205 online

Changing your name later and moving to a company

You can change a sole trader business name whenever you like. Tell HMRC through your online account or by updating your Self Assessment details, update your bank, insurer and any licences, and change your invoices, website and premises notice. If you're VAT-registered, update your VAT registration details too.

If you later set up a limited company, the company's name is registered at Companies House and has to meet stricter company naming rules, including not being the "same as" an existing company name. Check availability early if you plan to incorporate under your trading name, and consider registering the trade mark in your own name and licensing it to the company. Our limited company set-up guide covers the company name rules.

Common mistakes

• Adding "Ltd" to look established. It's not allowed for a sole trader and misleads customers.
• Leaving your own name off invoices. If you use a trading name, your full name and an address for service must be there.
• Assuming HMRC registration protects the name. It doesn't; only a trade mark gives exclusive rights.
• Checking only Companies House. Many businesses are sole traders or partnerships, so search the trade mark register and online too.
• Using ® too early. Wait until the mark is actually registered.
• Choosing a purely descriptive name and then trying to protect it. It usually can't be registered.
• Ignoring sensitive words in your logo or strapline. The rules apply to the name you trade under, however you present it.

Official links

• Choose your business name (sole traders)GOV.UK naming rules
• Annex A: sensitive wordsWords needing approval and who consents
• Incorporation and names guidanceBusiness names section
• Search for a trade markIPO register
• Register a trade markFees, process, timings
• Companies House register searchCheck company names

What to do next

Run your shortlist through the checklist above, pick a distinctive name, and set up your invoice template with your trading name, your own full name and an address for service. Then register as a sole trader with HMRC, giving your business name, and decide whether the name is worth a £205 trade mark. If you're still at the planning stage, our how to start a business guide covers the other first steps.

This is general information, not legal or tax advice — confirm on the official source or with a professional.

Frequently asked questions

Do I need to register my business name as a sole trader?

No. There's no register of sole trader business names in the UK, and Companies House doesn't record them. You tell HMRC about your trading name when you register for Self Assessment, but that doesn't reserve or protect the name. The only way to get exclusive rights to a name is to register it as a trade mark with the Intellectual Property Office.

Can a sole trader use 'Ltd' in their business name?

No. GOV.UK says a sole trader's name must not include 'limited', 'Ltd', 'limited liability partnership', 'LLP', 'public limited company' or 'plc'. Those words tell customers they're dealing with a company or LLP with limited liability, which a sole trader isn't. To use them, you'd need to incorporate a company at Companies House.

What name must appear on a sole trader's invoices?

If you trade under a name other than your own surname, your invoices, letters, written orders, receipts and payment demands must show your own full name and a UK address where documents can be served. The same details must be displayed at premises customers visit, and given in writing straight away to any customer or supplier who asks.

Can I use the same name as a limited company?

Company name rules don't stop a sole trader using a similar name, but trade mark and passing off law can. If the company has a registered trade mark for similar goods or services, or a reputation customers would confuse with you, it can take action and you might have to rebrand. Check the Companies House register and the trade mark register before committing.

How much does it cost to trade mark a business name?

An online UK trade mark application costs £205 for one class of goods or services and £60 for each additional class, after fees rose on 1 April 2026. If no one objects, registration usually takes about 3 to 4 months and lasts 10 years before it needs renewing.

Which words need permission in a business name?

Sensitive words such as Royal, Bank, Insurance, Charity, Chartered, NHS, Police, Dental, Nursing or Accredited need approval, usually with a letter of non-objection from the relevant body sent to Companies House. Using one without approval is an offence. Companies House's list (Annex A of its incorporation and names guidance) shows each word and who must consent.

Sources & verification

Figures on this page were checked against the sources below when it was last reviewed on 12 October 2026. Each rate and limit is stored once with its own official source and review date, and official update channels are monitored daily so changes are picked up. How we verify

1. 1.Become a sole trader: choose your business name — GOV.UK · accessed 12 October 2026
2. 2.Incorporation and names — Companies House · accessed 12 October 2026
3. 3.Annex A: sensitive words and expressions — Companies House · accessed 12 October 2026
4. 4.Company and business names (quick guide) — Business Companion (Chartered Trading Standards Institute) · accessed 12 October 2026
5. 5.Register a trade mark: apply — Intellectual Property Office / GOV.UK · accessed 12 October 2026
6. 6.Register a trade mark — Intellectual Property Office / GOV.UK · accessed 12 October 2026
7. 7.Register a trade mark: after you apply — Intellectual Property Office / GOV.UK · accessed 12 October 2026
8. 8.Intellectual Property Office fees to increase from April 2026 — Intellectual Property Office / GOV.UK · accessed 12 October 2026
9. 9.UK toolkit for US SMEs: protecting intellectual property — Intellectual Property Office / GOV.UK · accessed 12 October 2026