Set up Limited Company

How do I find my company number?

Your company registration number is an 8-digit identifier assigned by Companies House when you incorporate your business. To find your company registration number, check your certificate of incorporation, confirmation statement, or search the Companies House register using your company name. This unique number is required for official correspondence, tax returns, and banking, making it essential for all UK limited company operations.

Last updated
July 23, 2025
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How do I find my company number?

What is a company number?

A company number (also known as a company registration number) is an eight-digit number that is assigned by Companies House to a company upon incorporation.

Where to find your company number:

1. Search on Companies House

Honestly, the easiest way to find your company number rather than sifting through documents is just to search on Companies House. You can easily search the companies house register by your company name.

Find company number companies house
Search for your company name on Companies House

2. Your certificate of Incorporation

You can locate the number on your certificate of incorporation. The first digit of the company number is usually a zero, and is omitted in most instances. As such, your certificate of incorporation will show a seven-digit company number.

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