A company registration number is a unique sequence of numbers that Companies House issues to every newly incorporated UK limited company. Usually abbreviated as ‘CRN’, it 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, all statutory mail sent from Companies House, and on the public register of companies.
You cannot choose or change your company registration number. 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 the letters ‘OC’
- Scottish LLPs have 6-digit CRNs prefixed with the letters ‘SO’
Your CRN is classified as a Uniform Resource Identifier (URI), which makes it easier for Companies House to store, publish, and freely exchange registered company data with the general public, other government agencies, and non-governmental bodies.
Find your CRN using Companies House WebCHeck
To view your company details on the public register, including your company registration number, simply enter the registered name of your business in the bright yellow section on WebCHeck. Your details will appear on the screen, with your CRN displayed on the left-hand side of your company name.
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
- Company websites
About our services
In addition to our online company formation and company address services, Rapid Formations provides Software Filing through a secure 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 company resolutions. This facility is available free of charge to clients and non-clients.