How to Check Company Name Availability Before Registration

Before registering a company in England and Wales, the proposed company name must be checked for availability and compliance with Companies House rules. A company name is a legally registered identifier, and it must be unique, not misleading, and compliant with restrictions set out under the Companies Act 2006 and Companies (Trading Disclosures) Regulations.

Failure to check availability properly can result in rejection of the incorporation application, delays in trading, and potential legal disputes over naming rights or passing off.

Why Company Name Availability Matters

A company name is part of the official public register maintained by Companies House. It must distinguish the company from others already registered.

Checking availability ensures:

• The name is not already registered or too similar to an existing company
• The name does not contain restricted or sensitive words
• The name complies with UK naming regulations
• The incorporation application is not rejected

A name that passes informal checks may still be rejected if it conflicts with legal rules or trademarks.

Legal Framework Governing Company Names

Company name rules are governed primarily by:

• Companies Act 2006
• Company, Limited Liability Partnership and Business (Names and Trading Disclosures) Regulations 2015
• Companies House naming guidance
• UK Intellectual Property Office (UKIPO) trademark law

Companies House has discretion to reject names that are:

• Identical or too similar to existing names
• Misleading or suggest government affiliation
• Offensive or contain prohibited terms
• In breach of trademark rights

Even if a name is accepted at incorporation, it can later be challenged and required to change.

Step-by-Step: How to Check Company Name Availability

Step 1: Search the Companies House register

The primary method is to search the official Companies House register to identify:

• Exact matches
• Similar names
• Existing companies with overlapping wording

If a name is already in use or too similar, it will likely be rejected.

Step 2: Check spelling variations and similarity

Companies House does not only consider identical names. It also evaluates:

• Similar spelling (e.g. “Tech Solutions Ltd” vs “Tek Solutions Ltd”)
• Use of plural or singular forms
• Punctuation differences
• Word order changes

Names that are “too similar” may still be rejected under the same name test.

Step 3: Review sensitive and restricted words

Certain words require approval or are prohibited, including:

• “Bank”, “Insurance”, “Trust”, “Chartered”, “Royal”
• Words suggesting government affiliation
• Words regulated by financial authorities or professional bodies

Approval may be required from regulators such as the Financial Conduct Authority (FCA) or relevant government departments before use.

Step 4: Check trademark databases

Even if a name is available at Companies House, it may still infringe registered trademarks.

A search should be conducted using:

• UK Intellectual Property Office (UKIPO) trademark database

Trademark conflicts can lead to:

• Legal disputes in the High Court
• Passing off claims under common law
• Forced rebranding after incorporation

Step 5: Check domain name availability

Although not a legal requirement, checking domain availability is important for commercial use.

Consider:

• .co.uk and .com availability
• Social media handle availability
• Brand consistency across platforms

A company may be legally registered but commercially unusable if digital identity is unavailable.

Step 6: Consider international implications

If the company plans to trade internationally:

• Check trademark databases in relevant jurisdictions
• Ensure the name does not have negative meanings in other languages
• Confirm availability across international domain registrations

Companies House Name Restrictions

A proposed name may be rejected if it:

1. Is identical or too similar

Names already on the register or “too like” existing names are not permitted.

2. Contains sensitive or restricted terms

Certain terms require prior approval or are prohibited.

3. Misleads the public

Names suggesting false business activity or status (e.g. “Government”, “UK Authority”) are not allowed.

4. Includes offensive language

Offensive or inappropriate terms are automatically rejected.

5. Suggests association with public bodies

Names implying links to government departments or local authorities require permission.

What Happens If a Name Is Rejected

If Companies House rejects a company name:

• The incorporation application is halted
• A rejection notice is issued
• A new name must be submitted
• Fees may still apply depending on the filing method

Rejection does not prevent incorporation, but it delays the process.

Changing a Company Name After Registration

If a name becomes problematic after incorporation, it can be changed by:

• Special resolution of shareholders
• Filing form NM01 with Companies House
• Paying the relevant filing fee

However, name changes can affect branding, contracts, and banking arrangements.

Risks of Failing to Properly Check Name Availability

1. Incorporation delays

Incorrect or unavailable names lead to rejected filings.

2. Legal disputes

Trademark infringement claims may arise after incorporation.

3. Rebranding costs

Forced name changes can result in significant commercial disruption.

4. Loss of business identity

Customer confusion or loss of brand recognition may occur.

5. Regulatory issues

Use of restricted terms without approval can lead to compliance problems.

Practical Tips for Choosing a Compliant Company Name

• Choose a distinctive and original name
• Avoid generic industry terms alone (e.g. “London Consulting”)
• Check both Companies House and UKIPO databases
• Avoid names that closely resemble competitors
• Consider long-term branding rather than short-term availability
• Ensure name consistency across legal and digital platforms

Common Questions from our Readers

How do I check if a company name is already taken?

Search the Companies House register using the official name search tool.

Can two companies have similar names?

Yes, but only if they are not considered “too similar” under Companies House rules.

Do I need to check trademarks before registering a company?

It is not legally required, but it is strongly advisable to avoid infringement claims.

Can I reserve a company name?

No formal reservation system exists. Names are secured only upon successful incorporation.

What happens if I use a restricted word?

You may need approval from the relevant authority before Companies House will accept the name.

Final Thoughts

Checking company name availability before registration is a critical step in the incorporation process. It involves more than simply ensuring the name is not already taken; it requires compliance with Companies House rules, trademark law, and naming restrictions under UK legislation.

A properly checked and compliant name reduces the risk of rejection, legal disputes, and commercial rebranding costs. Careful verification across official registers and trademark databases ensures a smoother and legally secure company formation process.