It’s extremely important to choose a right name before starting a business, especially when forming a limited company.
In the UK, your company name must not only identify your business but also comply with UK legal regulations set by Companies House and the Companies Act 2006.
This blog will explain step-by-step how to choose a limited company name and other requirements.
Key Takeaways for Choosing a Company Name:
- Ensure your company name is unique and not too similar to existing ones.
- Include “Ltd” or “Limited” (or Welsh equivalents) in the name.
- Avoid implying links to the government or Royal Family.
- Watch for restricted words like “Bank” or “Insurance” that need approval.
- Keep the name appropriate and within the 160-character limit.
- Check availability through Companies House and ensure no trademark conflicts.
- Directors must verify their identity with Companies House starting November 2025.
This article has been updated and republished on 24 October 2025 to include the latest information about the topic choose a Limited Company name.
What are the main rules for Choosing a Limited Company name?
According to the UK government below are some of the rules to choose a limited company name. These requirements aren’t negotiable:
- Make it unique: Your name can’t match or closely resemble any existing registered company. Companies House checks this carefully to prevent public confusion.
- Add the right ending: Private companies need “Limited” or “Ltd” at the end. Welsh businesses can use “Cyfyngedig” or “Cyf” instead.
- Keep government connections out: Don’t suggest links to UK Government, councils or the Royal Family without proper authorisation.
- Watch sensitive words: Terms like “Bank,” “Insurance” or “Chartered Accountant” need approval from relevant authorities before you can use them.
- Stay appropriate: Offensive, misleading or confusing names get rejected immediately.
- Mind the length: Keep within 160 characters total including spaces and punctuation.
These rules protect both businesses and consumers. Breaking them means rejection and delays.
Understanding the Same As problem
Companies House applies strict similarity rules. Names that look different but could confuse people still count as “same as.” This covers:
- Punctuation (such as &&), special characters and words with similar meanings or spellings.
- Common UK company name words that cannot distinguish the company.
- Exceptions are made if your company is part of an existing group or the previous company has given written consent.
The only exceptions happen when companies belong to the same business group or when existing companies give written permission.
Sensitive words and expressions
Some words may be confusing to the public or could misrepresent the company’s status. If you want to use these words, you must:
- Get written approval from the Secretary of State or relevant regulator.
- Submit proof of permission with your company formation papers.
- Meet any specific requirements for that word or sector.
This process protects consumers from misleading business names and helps maintain professional standards.
How to check if your Company Name is available?
After selecting a name, you should use Companies House name availability checker online. This will let you know whether:
- Your proposed name is available or not.
- Whether it is too similar to any existing company.
- Whether the name contains any restricted words that require approval.
This step can help you avoid unnecessary delays and rejections in registration.
How to choose a name for an Accounting Firm or Professional Business?
Planning a name for accounting firm or similar professional business? Your name choice affects client trust and credibility.
- Include descriptive terms: Terms ****that clearly show what you do. Words like “Accounting,” “Advisory,” “Tax” or “Consulting” help potential clients understand your services immediately.
- Keep it memorable and simple: Complicated spellings or obscure references make it harder for clients to find you or recommend your services.
- Check online availability: Secure matching domain names and social media handles to maintain consistent branding across platforms.
- Research trademark issues: Search the UK Intellectual Property Office database to avoid conflicts with existing trademarks in your sector.
Key updates for 2025-26
- From 18 November 2025, all company directors and people with significant control will need to verify their identity with Companies House. This can be done online or through authorised agents. The goal is to reduce fraud and keep company records accurate.
- According to the UK government, over 801,864 new companies were incorporated across the UK in the year to March 2025, intensifying the competition for unique, available names.
- Companies House now makes sure that new company names do not give a false impression of support or approval from the government or financial groups. If a name suggests a false link of this kind, it will not be approved.
Allowed vs Restricted Company Names
How to get started after selecting the name?
Once you’ve selected your perfect name:
- Run a final availability check with Companies House.
- Secure your domain name and social media handles immediately.
- Get any required permissions for restricted words.
- Have a backup name ready in case of problems.
- Keep all approval documents for your company formation application.
Choosing a limited company name correctly sets your business up for success. The effort you put into this decision now saves problems later and helps build a strong brand identity from day one.
Your company name represents your business for years to come. Make it count by following the rules and choosing something that truly works for your goals.
Conclusion
Choosing a limited company name in the UK is a blend of legal compliance and smart branding. Make sure your name follows Companies House rules, is unique, non-offensive and reflects your business ideally.
For professional services like accounting firms, a clear and credible name can help establish trust and clarity from day one.
FAQs about choosing a Limited Company Name
Do I need to include “Limited” or “Ltd” in my company name?
Yes, for private limited companies this shows your limited liability status. It’s required by law, not optional.
Can I use the same or a similar name to an existing company
No, Companies House rejects names that could reasonably confuse customers, even if they’re not exactly the same.
What words are restricted or need permission in a company name?
Words that suggest official authority, regulated activities or professional qualifications you don’t have. When in doubt, check with Companies House first.
How can I check if my company name is available?
Use the official Companies House name checker online. It’s free and shows real-time availability plus any restrictions.
What is the maximum length for a company name?
Company names can be up to 160 characters long, including spaces and punctuation marks.
Does registering a company name protect my trademark?
No, company registration and trademark protection are completely separate legal processes with different benefits.
What happens if Companies House rejects my chosen name?
You’ll need to pick a different name that meets their requirements before your company can be registered. This delays the whole process.
Can I change my company name later if I don’t like it?
Yes, but it involves paperwork, fees and updating all your business materials. Better to choose carefully from the start.
