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Company Incorporation UK: Register with Companies House

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Part ofCompanies House Forms UK

Updated June 2026 · England & Wales
Setting up a limited company in the UK is one of the most common steps taken by founders, contractors and small business owners. The mechanics are handled by Companies House, the registrar for England and Wales, Scotland and Northern Ireland, and for most standard incorporations the paperwork can be completed in a single sitting. That said, the choices you make at incorporation, who sits on the board, how shares are allocated, which model articles you adopt, have long term consequences for tax, control and liability. This guide walks through the process from start to finish, explains the documents you need to prepare, and flags the decisions that tend to cause problems later if rushed. It is written for anyone forming their first company, as well as those who have incorporated before but want a refresher on how the current rules sit together.

Overview

Incorporation is the legal act of creating a company as a separate entity in its own right, distinct from the people who own or run it. Once a company has been registered at Companies House, it has its own legal personality: it can hold assets, enter into contracts, employ staff, sue and be sued, and it continues to exist independently of changes in ownership.

For most small UK businesses, the vehicle of choice is a private company limited by shares. The liability of its shareholders is capped at the amount unpaid on the shares they hold, which is why so many founders choose this structure over operating as a sole trader.

Other forms exist, including companies limited by guarantee (often used by charities and clubs), public limited companies, and limited liability partnerships. Each has its own rules, but the core registration process at Companies House follows broadly the same pattern. Incorporation also creates ongoing obligations, including filing annual accounts, a confirmation statement and keeping statutory registers up to date.

Key steps

  1. Choose your company name and structure. Decide whether a private company limited by shares, a company limited by guarantee or another structure fits your plans. Check the proposed name is available on the Companies House register, does not clash with an existing trade mark, and does not contain sensitive or restricted words that need approval. The name must end with 'Limited' or 'Ltd' unless an exemption applies.
  2. Confirm the people and the registered office. You need at least one director who is a natural person and aged 16 or over, and at least one shareholder (who can be the same person). Gather full names, dates of birth, home and service addresses, and nationality details for each officer. You will also need a registered office address in the UK, which becomes the public address for official correspondence and must be somewhere post can be received and acknowledged.
  3. Decide share structure and identify persons with significant control. Work out how many shares will be issued, to whom, at what nominal value, and whether there will be different classes. You must also identify anyone who qualifies as a person with significant control, typically holding more than 25 percent of the shares or voting rights, and record their details on the PSC register. Getting this right at the start avoids awkward corrections later.
  4. Prepare your memorandum and articles of association. The memorandum of association is a short statement confirming that the subscribers wish to form a company and agree to take at least one share each. The articles of association are the internal rulebook covering how directors are appointed, how meetings are run and how shares are transferred. Most small companies adopt the standard model articles, but you can draft bespoke articles if your arrangements need them.
  5. File the IN01 application and pay the fee. Submit the application to Companies House, either online through their web incorporation service, through a formation agent or by post using form IN01. Online applications are usually processed within 24 hours, while postal applications take longer. Once approved, Companies House issues a certificate of incorporation confirming the company name, number and date of formation, and the company legally exists from that moment.

Common questions

If you're dealing with this kind of situation, a call with an experienced legal adviser can help you work out the right next step — from £149.

Common questions

Q How long does it take to incorporate a UK limited company?
Online applications filed through the Companies House web service are typically processed within 24 hours, and often the same working day if submitted in the morning. Postal applications using form IN01 take significantly longer, usually eight to ten working days. Same day incorporation services are available for an additional fee. Processing times can extend if the application contains errors or if the chosen name needs further review.
Q Do I need a solicitor to form a company?
No. A straightforward incorporation of a private company limited by shares can be completed directly on the Companies House website without professional help. Many founders do this themselves or use a formation agent for a modest fee. Professional input tends to be more useful where the share structure is complex, where there are multiple founders with differing contributions, or where bespoke articles of association are needed.
Q What is the difference between the memorandum and the articles of association?
The memorandum of association is a short formal document confirming that the founding subscribers want to form the company and agree to become members. Since the Companies Act 2006, it is largely a historical record. The articles of association are the working constitution, setting out how the company is run day to day, including director powers, shareholder rights, meeting procedures and how shares can be issued or transferred.
Q Can I use my home address as the registered office?
Yes, you can use a home address as the registered office, but it will appear on the public Companies House register and be searchable by anyone. Many directors prefer to use a separate service address, an accountant's office or a registered office service to keep their home address off the public record. The registered office must be in the same UK jurisdiction as the company.
Q How many directors and shareholders does a UK limited company need?
A private limited company needs at least one director who is a natural person aged 16 or over, and at least one shareholder. The same individual can hold both roles, which is common for sole founders. There is no statutory maximum on the number of directors or shareholders. Public companies have different requirements, including a minimum of two directors and a qualified company secretary.
Q What happens after the company is incorporated?
Once you have the certificate of incorporation, you should register for corporation tax with HMRC within three months of starting to trade, set up a business bank account, and consider VAT and PAYE registration if relevant. You will also need to maintain statutory registers, file annual accounts, and submit a confirmation statement at least once a year. Keep the company details on the register up to date as changes occur.
Q Is a limited company better than being a sole trader?
It depends on your circumstances. A limited company offers limited liability protection, can be more tax efficient at certain profit levels, and often looks more established to clients and suppliers. A sole trader arrangement is simpler, with fewer filing obligations and more privacy. The right answer turns on expected profits, risk exposure, how you want to take money out of the business and plans for growth.
If you're dealing with this kind of situation, a call with an experienced legal adviser can help you work out the right next step — from £149.

Sources

This guide is based on primary UK law and official guidance.

Brad Askew, Solicitor (non-practising)

Written & reviewed by

Brad Askew Solicitor (non-practising)

Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice. LegalDocuments.co.uk is not a law firm and does not provide regulated legal advice.

Legal disclaimer
This article is for general information only. It is a tool to help you find your way — not legal advice, and not a substitute for speaking to a qualified adviser about your situation.