Company Name vs. Trading Name: What's the Difference?
Your registered company name and your trading name don't have to be the same. Here's how trading names work, the rules to follow, and what you must disclose.
Your company name is the legal name registered at Companies House. Your trading name is what you use to operate day to day, and they don't have to be the same. Many UK businesses trade under a name that's different from their registered company name. This guide explains the rules, the practical considerations, and the disclosures you're legally required to make when using a trading name.
What is a company name?
Your company name is the legal name of your business as registered at Companies House. It appears on your Certificate of Incorporation, your public register entry, your statutory accounts, and all official filings. Every private limited company must include "Limited" or "Ltd" in its name.
Your company name is public, anyone can search for it on the Companies House website.
What is a trading name?
A trading name (sometimes called a business name) is the name under which your company actually operates and presents itself to the world. It's what goes on your website, your shopfront, your social media profiles, and (for many businesses) what your clients actually call you.
A trading name doesn't need to be registered anywhere. You can adopt one at any time, and you can use multiple trading names if your company operates across different markets or product lines.
Example:
Registered company name: XYZ Digital Services Limited
Trading name: Blue Pixel Studio
The company is legally "XYZ Digital Services Limited" but presents itself to clients as "Blue Pixel Studio". Both names are legitimate, but when invoicing, filing documents, or making legal commitments, the company uses its full legal name.
Why use a trading name?
There are several legitimate reasons to use a different trading name from your registered company name:
Branding flexibility: "Ltd" doesn't always work well in consumer-facing brand names. A trading name can be cleaner and more memorable.
Multiple product lines: A company can operate several distinct brands (trading names) without creating multiple separate legal entities.
Name evolution: Your company name was chosen at incorporation; your trading name can evolve as your brand develops without the administrative overhead of a formal name change.
Privacy: Some founders use a trading name to avoid their personal name appearing in their company's registered name, while still operating a named personal brand.
Rules for trading names in the UK
While trading names don't need to be registered, there are rules:
The trading name must not be the same as, or confusingly similar to, another existing business, this applies to trademarks and can expose you to a passing-off claim
It cannot include restricted words without appropriate approval (the same rules that apply to registered company names also apply here)
It cannot be offensive or misleading
You must disclose your full company name when required - on invoices, letterheads, websites, and certain other business communications
Disclosure requirements when using a trading name
If your company trades under a name that's different from its registered name, UK law requires you to disclose the company's legal name in certain places:
Document/location | Required disclosure |
Business letters, invoices, orders | Full registered company name, registered number, registered office address |
Website | Full registered company name and registration number (typically in the footer) |
Business premises (if any) | Registered name displayed visibly |
Email footers | Registered name and number (standard practice) |
Should you register a trademark for your trading name?
If your trading name is important to your business, if it's how clients know you, and you've invested in building a reputation under it, registering it as a trademark is strongly advisable. This gives you exclusive rights to the name for your specified goods and services and makes it significantly easier to challenge copycats. UK trademark registration starts from £170 per class through the IPO.