--- title: How To Find My Company Registration Number? description: Wondering how to find your company registration number? 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By [**Simply Accounts**](https://www.simply-accounts.com/simply-accounts-blog/author/simply-accounts) on Jun 25, 2026, 3:30:00 PM ![Business professionals in a meeting discussing company documents, understanding how to find a company registration number for UK businesses.](https://www.simply-accounts.com/hubfs/How-to-find-my-company-registration-number.jpg) Running a limited company involves managing a variety of official details. Among the most important is your Company Registration Number, or CRN. This unique 8-character identifier is assigned to your business by Companies House the moment you incorporate. It serves as your company’s official fingerprint within the UK business system. Crucially, this number never changes, even if you update your company name or move your registered office. 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Having this information readily available is essential for filing your accounts, signing contracts and maintaining your official [business](https://www.simply-accounts.com/simply-accounts-blog/how-business-being-valued-business-owners) profile. ## **Check Your Certificate Of Incorporation** The most straightforward way to identify your CRN is to look at your original incorporation paperwork. When you first registered your business, Companies House issued a Certificate of Incorporation. This document is the formal proof that your company exists as a legal entity. You will find your 8-character registration number clearly displayed near the top of this certificate. It is a good idea to keep a digital copy of this document saved in a secure folder on your computer or cloud drive. If you are ever asked to check company registration number details during a contract negotiation or for a banking application, you will have the original record right there to reference. ## **Search The Companies House Public Register** Of course, you might not have your original certificate to hand, or you may be away from your office. If you need to check company registration number information quickly, the Companies House public register is your best resource. Simply visit the official Companies House website and use the ‘Find and update company information’ search tool. Type in your company name, and the system will pull up your business profile. Your CRN will be displayed prominently at the top of the page. This service is completely free to use, and it is a reliable way to verify your details at any time of day or night. It is a helpful tool for any director who needs to find their company registration number. ## **Look Out For It On Official Correspondence** Your CRN is not just found on your initial registration papers. It is a mandatory requirement that this number appears on a wide range of official company communications. You can often find it on: 1. Official letters and emails sent by Companies House. 2. Your filed annual accounts and confirmation statements. 3. Correspondence from your accountant or professional formation agent. 4. Official company invoices, order forms and website footers. By keeping an eye on your standard business paperwork, you will often find your number without needing to launch a special search. If you are ever unsure where to look, a quick glance at any formal filing from your accountant will usually provide the answer you need. Knowing [how to find your company registration number](https://www.simply-accounts.com/limited-company-accountants) becomes second nature once you know where the data is stored. ## **Simply Accounts Can Help You Stay On Top Of The Details** Keeping track of your CRN is just one small part of the administrative landscape when running a [limited company](https://www.simply-accounts.com/simply-accounts-blog/limited-company-essentials-for-new-directors). As your business grows, the number of filings, deadlines and requirements can begin to feel overwhelming. But you don’t need to manage these details in isolation. At Simply Accounts, we provide the expert support that makes the bigger picture easier to manage. Whether you need help to check company registration number records for a new application or you want to ensure your annual filings are submitted with total accuracy, we are here to walk you through it. We take the weight of compliance off your shoulders, freeing up your time to focus on what you do best: driving your business toward its next milestone. ## **Talk To Simply Accounts About Your Next Steps** Staying organised is the key to running a healthy, stress-free company. If you want to ensure your business finances are in great shape and your compliance is handled by people who genuinely care about your success, we would love to help. [Get in touch](https://www.simply-accounts.com/contact-us) with Simply Accounts today to discuss your business needs. Together, we can build a plan that keeps you on the right track, ensuring you always have the support you need to keep your business moving forward with confidence. 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