Sole Trader Business Name Rules UK

Quick answer

As a sole trader, you don’t register a business name anywhere. This is part of our getting started guide for new sole traders. There’s no form to fill in, no fee, and no Companies House listing. You pick a name and start using it. But there are rules about what you can and can’t call yourself, and requirements about what must appear on your paperwork.

Your two options

Option 1: Trade under your own name. Sarah Jones does business as “Sarah Jones”. Nothing else needed. This is the simplest approach and what most sole traders do when starting out.

Option 2: Choose a trading name. Sarah Jones does business as “Jones Plumbing” or “Clearview Design” or “The Bake House”. You can use any name you like, within the rules below.

Either way, you don’t register the name with any government body. When you register as a sole trader with HMRC, they ask for your trading name — but that’s informational, not a legal registration.

What you can’t use

Words suggesting you’re a registered company:

Sensitive words and expressions: Certain words require permission from a relevant government body before you can use them. The main ones:

The full list on gov.uk runs to about 100 words. Most sole traders will never run into this — it’s mainly to stop people implying government backing they don’t have.

Offensive or misleading names: Nothing vulgar, and nothing that implies you offer services you don’t (e.g. using “Solicitors” or “Architects” in your name without being qualified).

Existing trade marks: You can’t use a name that’s identical or confusingly similar to a registered trade mark in your sector. Check the UK trade mark register before committing to a name. This won’t catch unregistered brands, but it flags the obvious conflicts.

What must appear on your paperwork

Even if you trade under a different name, UK law requires your legal name (your actual personal name) and business address to appear on:

So if Sarah Jones trades as “Clearview Design”, every invoice should show both: “Clearview Design” as the trading name and “Sarah Jones” somewhere on the document, plus her business address.

This isn’t optional — it’s required by the Business Names Act. In practice, most people put their legal name in the footer or in a “Registered business” line on their invoice template.

Checking if a name is available

There’s no central register of sole trader names, so you can’t do a single definitive check. But you should:

  1. Search Companies Housefind-and-update.company-information.service.gov.uk — to see if a limited company already uses the name
  2. Search the UK trade mark registergov.uk/search-for-trademark — to check for registered trade marks
  3. Google the name — see who else is using it in your industry and region
  4. Check domain availability — if you plan to build a website, see if the .co.uk or .com is available
  5. Search social media — check if the handle is free on Instagram, Facebook, etc.

Two sole traders can technically use the same trading name (unlike limited companies, where names must be unique at Companies House). But sharing a name with another business in your area or industry creates confusion, risks legal action under “passing off” rules, and makes marketing harder. Pick something distinctive.

Can I change my name later?

Yes, at any time. There’s no formal process — you just start using the new name. Update your invoices, website, bank account, and let HMRC know via your Self Assessment return or by calling them. Your accounting software will have a business name field you can update.

The only complication is if you’ve already built brand recognition. From a practical standpoint, it’s easier to get the name right early on.

Next step

Once you’ve chosen your name:

  1. Register as a sole trader if you haven’t already — you’ll enter your trading name during registration
  2. Set up your invoice template with both your trading name and legal name
  3. Open a business bank account under your trading name — most digital banks let you specify a trading name during setup
  4. Choose accounting software — connect it to your bank so every transaction is tracked from day one

Last updated: March 2026.