A company registration number is a unique number issued by Companies House when a limited company or Limited Liability Partnership (LLP) is incorporated. It is usually abbreviated as ‘CRN’ and is sometimes referred to as a Companies House Number.
Your CRN will consist of 8 numbers or 2 letters followed by 6 numbers. It will be displayed on your certificate of incorporation and any statutory company mail sent from Companies House. It will also appear on the public register next to your company details.
You cannot choose or change your CRN. It will be computer generated on a sequential basis depending on your country of incorporation and the type of company you set up:
- Companies formed in England and Wales have 8-digit CRNs.
- Scottish companies are given 6-digit CRNs with the prefix ‘SC’.
- Limited Liability Partnerships (LLPs) are issued with 6-digit CRNs prefixed with ‘OC’.
- Scottish LLPs have 6-digit CRNs prefixed with ‘SO’.
Please click here to view the full list of Uniform Resource Identifiers for UK companies on the public register.
Find your CRN using Companies House WebCHeck
To view your company on the Companies House register and locate your CRN, simply enter the registered name of your business into the bright yellow section on WebCHeck. Your details will appear on the screen with your CRN on the left-hand side of your company name. Very handy if you can’t find your certificate of incorporation and you have somehow managed to lose every piece of official correspondence from Companies House.
When will I use my company registration number?
Generally, you should expect to provide your CRN in the following situations:
- Changing your company name.
- Changing your registered office or SAIL address.
- Adding or removing a company director or secretary.
- Changing the details of directors and secretaries.
- Filing annual confirmation statements.
- Filing annual accounts.
- Registering for business taxes.
- Paying Corporation Tax.
- Filing Company Tax Returns.
- Filing copies of resolutions.
- Increasing share capital.
- Issuing share certificates.
- Issuing dividend vouchers.
- Changing your accounting reference date (ARD).
You must also display your company registration number on all forms of business stationery, including:
- Official letters, faxes and emails.
- Compliments slips.
- Order forms.
- Invoices and receipts.
About our services
In addition to online company formation and company address services, Rapid Formations provides Software Filing through an Online Admin Portal. You can view your company details, including your CRN, report changes to Companies House, download incorporation documents, and file annual confirmation statements and resolutions. This facility is available free of charge to clients and non-clients – click here to find out more.