Registering a company with Companies House is a critical step in setting up a business in the UK. Here is a detailed guide on how to complete this process:

Steps to Register with Companies House:

1. Choose a Company Name:
   • Ensure the name is unique, adheres to naming rules, and is not too similar to existing companies.
   • Check the availability of the company name using the Companies House name availability checker.
2. Decide on the Company Structure:
   • Choose the type of company (e.g., private limited company, public limited company, limited liability partnership).
3. Prepare Required Documents:
   • Memorandum of Association: A legal statement signed by all initial shareholders or guarantors agreeing to form the company.
   • Articles of Association: Written rules about how the company is to be run. You can use standard (model) articles or create bespoke articles.
4. Provide Company Details:
   • Registered Office Address: The official address where legal documents can be sent. It must be a physical address in the UK.
   • Director(s) and Secretary: Details of the company’s directors and secretary (if applicable). Private companies need at least one director, while public companies need at least two and a company secretary.
   • Shareholders and Share Capital: Information about initial shareholders and the shares issued to them.
5. Register Online or by Mail:
   • Online Registration: The quickest method. You can register through the Companies House Web Incorporation Service or third-party software.
   • By Mail: Send Form IN01 to Companies House with the required documents.

Online Registration Process:

1. Go to the Companies House Website:
   • Use the Web Incorporation Service on the Companies House website.
2. Create an Account:
   • Set up an account or log in if you already have one.
3. Fill in the Application Form:
   • Provide all necessary details including company name, registered office address, director(s) information, and shareholder details.
4. Submit Required Documents:
   • Upload the Memorandum of Association and Articles of Association (if not using model articles).
5. Pay the Registration Fee:
   • The standard fee is £12 for online registration and can be paid by card or PayPal. For same-day service, the fee is £100.
6. Receive Confirmation:
   • If the application is successful, you will receive a Certificate of Incorporation via email. This document confirms that the company legally exists and includes the company number and formation date.

By Mail Registration Process:

1. Complete Form IN01:
   • Download and fill out Form IN01 with the required information.
2. Prepare Documents:
   • Include the Memorandum of Association and Articles of Association.
3. Send the Form and Documents:
   • Mail the completed form and documents to Companies House at the appropriate address (either Cardiff, Edinburgh, or Belfast, depending on where the company is registered).
4. Pay the Registration Fee:
   • The fee for registration by mail is £40. For same-day service, the fee is £100.
5. Wait for Confirmation:
   • If the application is successful, you will receive the Certificate of Incorporation by post.

After Registration:

1. Register for Corporation Tax:
   • You must register for Corporation Tax within three months of starting business activities.
2. Maintain Statutory Registers:
   • Keep updated records of shareholders, directors, and other statutory registers.
3. File Annual Returns and Accounts:
   • Submit annual confirmation statements and financial accounts to Companies House.

By following these steps, you can successfully register your company with Companies House and ensure compliance with UK company law.