Your company registration number is unique to your company, it is issued by Companies House on formation of your business entity. It is normally eight digits long or two letters followed by six digits, depending on the type of entity it relates to and if it’s registered in Scotland or not. The company number is displayed on your certificate of incorporation, it appears on the company register along side your company name and is also noted on most if not all correspondence with Companies House.

It can be referred to as your “Company Number”, Company Registration Number”, “Company CRN” or just “CRN” for short.

Once your company has been formed and company registration number issued, it cannot be changed.

Companies In England & Wales: Start with 0 or 1. (Sometimes the 0 is left out, and it becomes a seven digit number.)

Limited Liability Partnerships (LLPs) In England & Wales: Start with OC (The letter O not the number zero.)

Companies In Scotland: Start with SC.

Limited Liability Partnerships (LLPs) In Scotland: Start With SO (The letter O not the number zero.)

Companies In Northern Ireland: Start With NI.

Limited Liability Partnerships (LLPs) In Northern Ireland: Start with NC.

How do I quickly find out the company number of my business?

The quickest and easiest way to lookup your company number, often much quicker than finding it in your own records is to search the online register. Simply head over to the Companies House web search facility and enter your company name!

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The company registration number is displayed just below the company name, really clear and easy to find.

You can also check loads of other information via this .gov website. All the up to date public information is available here to view, download, verify, all completely free! There is never any need to pay for a service to find and access this information.

You can search and find the number of any registered company for free using the Companies House Website. A company number is not private or confidential information. There is no reason not to make the number of your company publicly available on your website or business marketing. It’s just a public as your business name, whatever that may be!

Where should I use my Company Number?

You can use your company number on any and all business documents, mostly any documents you display your business name alongside your business address, you should detail your company number. Some documents require your company number, like invoices, credit notes, receipts, and official correspondence.

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