How do I search ltd company names in the UK?

Use the company names search tool on this page. Enter your desired ltd company name and it instantly queries the live Companies House register containing over 5 million entries. Results show all active and dissolved companies matching your search so you can identify name conflicts before starting your new ltd company registration.

What is the best way to check company name availability UK?

The best way to check company name availability UK is to use our free real-time search tool above. It applies the same same-as matching algorithm that Companies House uses internally, so you get an accurate assessment before paying any registration fees.

What SIC code do I need for a tech company in the UK?

Most UK tech startups and software companies use SIC code 62012 (Business and domestic software development) or 62020 (Information technology consultancy activities). Use the SIC Code Finder tool above to search by industry keyword and find the most accurate code for your business.

Free Research Tools

Company Names Search & Check Company Name Availability UK

Search ltd company names instantly against the live Companies House register. Use our free company names search tool to check company name availability UK, verify SIC codes, and launch your new ltd company registration today.

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Company Names Search — Live UK Register

Check Company Name Availability UK — Official Companies House API

SIC Code Finder

Standard Industrial Classification

Global Opportunity Presets

High-Profit Industrial Niches

Global founders often overlook these complex but highly lucrative industries. Use these verified SIC codes to position your UK company for high-ticket tenders and international trade.

Expert Naming Tip

Your ltd company name must be unique. Avoid names that are "too similar" to existing brands — Companies House removes common words, punctuation, and suffixes when comparing names. Always run a company names search before paying for branding or domains.

For SIC codes, most tech startups use 62012. Most consultancies use 70229.

Full Name Rules Guide

Name Available? Register Now.

You've done the company names search. The next step is to secure it. Start your new ltd company registration today — same-day filing, Companies House approved.