How to Register a Company in the UK: Complete 2026 Guide

Step-by-step guide to registering a company in the UK in 2026. Companies House registration, Ltd formation, SIC codes, director requirements, costs, and timeline.

The United Kingdom remains one of the fastest, cheapest, and most straightforward jurisdictions in the world for company registration. A limited company can be incorporated through Companies House in as little as 24 hours for a government fee of just 12 GBP (approximately $15 USD). There are no residency requirements for directors or shareholders, no minimum capital requirements, and the entire process can be completed online from anywhere in the world.

This guide provides a complete, step-by-step walkthrough of registering a company in the UK in 2026. It covers every requirement, document, decision point, and cost involved -- from choosing your company name to receiving your certificate of incorporation. Whether you are a UK resident starting your first business or a foreign entrepreneur establishing a presence in one of the world's most established commercial markets, this guide covers everything you need to know.

Types of UK Companies You Can Register

Before beginning the registration process, you need to decide which type of company to form. The overwhelming majority of new registrations are private limited companies (Ltd), but Companies House supports several structures.

Company Type Typical Use Liability Minimum Members
Private Limited by Shares (Ltd) Standard trading company Limited to share value 1 director, 1 shareholder
Private Limited by Guarantee Non-profits, clubs, social enterprises Limited to guarantee amount 1 director, 1 member
Public Limited Company (PLC) Listed companies, large enterprises Limited to share value 2 directors, 1 secretary, min 50,000 GBP share capital
Limited Liability Partnership (LLP) Professional services firms Limited to contribution 2 designated members
Unlimited Company Rarely used, special purposes Unlimited 1 director, 1 shareholder

For most entrepreneurs, a Private Limited by Shares (Ltd) is the correct choice. It provides limited liability, allows a single person to act as both director and shareholder, has no minimum capital requirement, and is the structure that banks, clients, and partners expect when dealing with a UK business.

If you are unsure which structure best fits your situation, see our detailed comparison of Ltd vs LLP vs Sole Trader. The choice of structure affects your tax obligations, personal liability, and administrative burden for years to come, so it is worth careful consideration before you begin the registration process.

Prerequisites Before Registration

Before submitting your application to Companies House, you need to have the following information and decisions prepared.

Company Name

Your company name must be unique and not identical or too similar to any existing name on the Companies House register. You can check name availability for free at the Companies House name availability checker. The name must end with "Limited" or "Ltd" (or the Welsh equivalents "Cyfyngedig" or "Cyf" if registering in Wales).

Certain words and expressions are restricted and require permission to use. These include words that suggest a connection to government (such as "British," "Authority," "Council"), regulated professions ("Bank," "Insurance," "Trust"), or specific industries ("Charity," "Royal"). The full list of sensitive words and expressions is published by Companies House.

Registered Office Address

Every UK company must have a registered office address. This is the official address where legal documents, statutory mail, and correspondence from Companies House and HMRC will be sent. The address must be a physical location in the same jurisdiction where the company is incorporated:

  • England and Wales -- address must be in England or Wales
  • Scotland -- address must be in Scotland
  • Northern Ireland -- address must be in Northern Ireland

The registered office address is publicly visible on the Companies House register. Many directors choose not to use their home address for privacy reasons and instead use a registered office service, which typically costs 50 to 300 GBP per year.

SIC Codes

You must provide at least one Standard Industrial Classification (SIC) code that describes your company's business activities. SIC codes are five-digit codes from the condensed list published by Companies House. You can select up to four SIC codes. Common examples include:

  • 62020 -- Information technology consultancy activities
  • 70229 -- Management consultancy activities (other than financial management)
  • 47910 -- Retail sale via mail order houses or via internet
  • 73110 -- Advertising agencies
  • 62012 -- Business and domestic software development

Choosing the correct SIC code matters because it affects how HMRC categorizes your business and may influence which regulatory requirements apply. If your activities span multiple categories, select the codes that best describe your primary and secondary activities.

Director and Shareholder Details

You need at least one director and at least one shareholder (these can be the same person). For each director, you must provide:

  • Full name (and any former names used in the last 20 years)
  • Date of birth
  • Nationality
  • Country of residence
  • Service address (this is made public; can be the company's registered office)
  • Residential address (kept private by Companies House; not shown on public register)

For each shareholder, you must provide name, address, and details of the shares held (number, class, nominal value, and amount paid).

There is no requirement for directors or shareholders to be UK residents or UK citizens. A company can be formed with all directors and shareholders based overseas. This makes the UK one of the most accessible jurisdictions for foreign entrepreneurs, with no work permit or visa required simply to be a director or shareholder of a UK company.

Articles of Association

The articles of association are the rules that govern how the company is run. Companies House provides model articles that are suitable for most private limited companies. If you use the model articles, you simply state this on the registration form and do not need to submit a separate document.

If you require bespoke articles (for example, to create multiple classes of shares, restrict share transfers, or establish specific decision-making procedures), you must draft custom articles and submit them with your application.

Statement of Capital

You need to declare the company's initial share capital. There is no minimum requirement. Most small companies are formed with a single share worth 1 GBP. You need to specify:

  • Total number of shares
  • Aggregate nominal value
  • Currency
  • For each share class: prescribed particulars, number of shares, nominal value per share, amount paid up, and amount unpaid

Step-by-Step Registration Process

Step 1: Create a Companies House Account

Go to the Companies House online filing service and create a user account. This is free and requires only an email address and password. You will use this account to file the incorporation application and all future filings (annual confirmation statements, accounts, etc.).

Step 2: Start a New Company Registration

Select "Register a company" and choose "Private limited by shares" (or your chosen structure). The online form will guide you through each section.

Step 3: Enter Company Details

Provide your chosen company name, registered office address, and SIC codes. The system will automatically check the company name against existing registrations and flag any conflicts.

Step 4: Enter Director Details

Add at least one director with their full personal details. Remember that the service address is public and the residential address is private. Most directors use the company's registered office as their service address.

Step 5: Enter Shareholder Details and Statement of Capital

Add the shareholders and declare the initial share capital. For a simple single-shareholder company with one share worth 1 GBP, this step takes less than a minute.

Step 6: Confirm the Articles of Association

Select model articles or upload your custom articles. For the vast majority of registrations, model articles are appropriate and simplify the process.

Step 7: Add People with Significant Control (PSC)

Since April 2016, UK companies must identify and register Persons with Significant Control. A PSC is anyone who holds more than 25% of shares or voting rights, has the right to appoint or remove the majority of the board, or otherwise exercises significant influence or control. For most single-owner companies, the sole shareholder is the only PSC.

Step 8: Review and Submit

Review all details carefully. Once submitted, corrections require separate filings and may incur delays. Pay the 12 GBP registration fee by credit or debit card.

Step 9: Receive Your Certificate of Incorporation

Companies House will process your application, typically within 24 hours. Upon approval, you receive a certificate of incorporation containing your company number and confirmation of the company name, registered office, and date of incorporation. Your company is now legally formed.

Registration Method Fee (GBP) Fee (USD) Processing Time
Online (standard) 12 15 Usually 24 hours (often 3-6 hours)
Online (same-day) 30 38 Same working day (submit before 3pm)
Paper (Form IN01 by post) 40 51 8-10 working days
Software filing (via agent) 12 15 Usually 24 hours

The online registration process has been significantly streamlined. Our analysts note that the most common reason for rejection is a company name that is too similar to an existing registration. Check name availability thoroughly before submitting, and have a backup name ready. If rejected, you can resubmit immediately without paying a second fee, but the processing clock resets.

What to Do Immediately After Incorporation

Receiving your certificate of incorporation is just the beginning. There are several critical steps to complete in the days and weeks following incorporation.

Register for Corporation Tax with HMRC

You must register your company for Corporation Tax within three months of starting business activity. HMRC will issue a Unique Taxpayer Reference (UTR) number, which you need for filing tax returns and communicating with HMRC. Registration is done online through the HMRC website and requires your company number and incorporation date.

Open a Business Bank Account

UK banks require a business bank account for limited companies. You cannot use a personal bank account for company transactions. Opening a business bank account in the UK can take from 1 day (with digital-first banks like Tide, Starling, or Revolut Business) to 4-6 weeks (with traditional high street banks like HSBC, Barclays, NatWest, or Lloyds).

For foreign directors without a UK residential address, digital banks are typically the fastest and most accessible option. Traditional banks may require in-person identity verification at a UK branch. For a detailed guide on banking options, see our UK business banking guide.

Register for VAT (If Applicable)

VAT registration is mandatory if your taxable turnover exceeds 90,000 GBP in any 12-month rolling period (2026 threshold). Below this threshold, registration is voluntary. Voluntary registration may be beneficial if your customers are VAT-registered businesses or if you have significant input VAT to reclaim.

Register as an Employer (If Hiring)

If you plan to hire employees (including paying yourself a salary as a director), you must register as an employer with HMRC before the first payday. This gives you a PAYE reference number for operating payroll, deducting income tax, and paying National Insurance contributions.

Set Up Statutory Records

Every UK company must maintain certain statutory records, which can be kept at the registered office or at a SAIL (Single Alternative Inspection Location). Required records include the register of members, register of directors, register of PSCs, and register of charges.

Arrange Business Insurance

While not all insurance is legally required, professional indemnity insurance, public liability insurance, and employers' liability insurance (mandatory if you have employees) are strongly recommended. Costs vary by industry and coverage level but typically start from 100 to 500 GBP per year for small businesses.

Director Responsibilities and Compliance Calendar

UK company directors have legal duties under the Companies Act 2006. Understanding these obligations is essential to avoid penalties and maintain good standing.

Annual Compliance Requirements

Obligation Deadline Cost Penalty for Late Filing
Confirmation Statement (CS01) Within 14 days of review date (annually) 13 GBP (online) / 40 GBP (paper) Company may be struck off
Annual Accounts 9 months after financial year end Filing is free 150 GBP (1 month late) to 1,500 GBP (6+ months late)
Corporation Tax Return (CT600) 12 months after accounting period end Filing is free 100 GBP (1 day late), escalates to 1,600+ GBP
Corporation Tax Payment 9 months and 1 day after accounting period end N/A (tax due) Interest charges plus penalties
PSC Register Updates Within 14 days of any change Free Criminal offense; fine up to 5,000 GBP

Late filing of annual accounts triggers automatic penalties. These penalties are fixed amounts and cannot be appealed on grounds such as being a small company, having no turnover, or the accounts showing nil activity. Companies House enforces these penalties strictly.

Directors are personally responsible for ensuring filings are made on time. Even if you delegate tax and accounts to an accountant, the legal responsibility remains with the director. Our analysts recommend setting calendar reminders at least one month before each deadline and confirming with your accountant that filings have been submitted. The most common compliance failure for new companies is missing the first accounts filing deadline, which is often shorter than expected because it runs from the date of incorporation, not the date of first trading.

Common Mistakes to Avoid

Using a residential address as the registered office without understanding the privacy implications. The registered office address is publicly searchable on the Companies House register. Anyone can look up your company and see this address. If it is your home, this information is permanently on the public record even if you later change the registered office.

Choosing an inappropriate SIC code. The SIC code you select on incorporation can affect how HMRC views your company and which sector-specific regulations may apply. Take time to find the most accurate code rather than selecting the first option that seems close.

Not keeping personal and company finances separate. From the moment of incorporation, the company is a separate legal person. Mixing personal and company money can jeopardize your limited liability protection and create tax complications. Open a business bank account promptly and use it exclusively for company transactions.

Ignoring the PSC register. The requirement to maintain an accurate PSC register is relatively new and frequently overlooked by new company owners. Failure to maintain the register or notify Companies House of changes is a criminal offense.

Assuming you can trade immediately without HMRC registration. While the company exists from the date of incorporation, you must register for Corporation Tax with HMRC before you can legally begin trading. Operating without registration can result in penalties.

Registration for Foreign Entrepreneurs

The UK imposes no restrictions on foreign ownership of companies. A non-UK resident can serve as a director, shareholder, and PSC without obtaining a visa or work permit -- merely holding a directorship or shares in a UK company does not constitute working in the UK.

However, foreign entrepreneurs should be aware of several practical considerations:

Bank account opening. Non-residents may face additional identity verification requirements. Digital banks (Tide, Starling, Revolut Business) are generally more accessible for non-resident directors than traditional high-street banks.

Registered office address. You must have a UK address. A registered office service is the standard solution for non-resident directors.

Tax residency. A UK company is considered UK tax resident and must pay UK Corporation Tax on its worldwide profits, currently 25% for profits over 250,000 GBP and 19% for profits under 50,000 GBP. For details on corporate tax planning, see our UK corporate tax guide.

Accounting and filing. All filings must be made to UK authorities (Companies House and HMRC). Engaging a UK-based accountant is strongly recommended for non-resident directors.

For information on the legal framework governing UK businesses, see our guide to UK business laws and regulations.

Costs Summary

The total cost to register and begin operating a UK limited company is remarkably low compared to most jurisdictions.

Cost Item Amount (GBP) Amount (USD) Notes
Companies House registration (online) 12 15 One-time government fee
Registered office service (annual) 50 - 300 64 - 382 Optional if using own address
Accountant (annual) 800 - 2,500 1,019 - 3,184 For small Ltd company accounts and tax return
Business bank account Free - 10/month Free - 13/month Digital banks often free for basic accounts
Confirmation statement (annual) 13 17 Annual Companies House filing
Business insurance (annual) 100 - 500 127 - 637 Varies by industry and coverage
First-year total (minimal) 975 - 3,325 1,242 - 4,235 Excludes rent, salaries, stock

The UK's 12 GBP company registration fee is among the lowest in the world and has not increased in several years. Combined with no minimum capital requirement, no mandatory notarization, and fully digital processing, the UK offers one of the most cost-effective company formation processes globally. For a complete cost analysis, see our detailed guide on the cost of starting a business in the UK.

Conclusion

Registering a company in the UK is a straightforward process that can be completed in a single day for just 12 GBP. The combination of low fees, no residency requirements, no minimum capital, and a fully digital registration system makes the UK one of the most accessible jurisdictions for entrepreneurs worldwide.

The key steps are: choose your company structure (Ltd for most people), prepare your company name, registered office address, SIC codes, and director/shareholder details, then submit your application through Companies House online. After incorporation, register for Corporation Tax with HMRC, open a business bank account, and set up your compliance calendar for annual filings.

The most important thing to remember is that incorporation is just the starting point. The ongoing responsibilities of maintaining accurate records, filing annual accounts on time, and meeting tax obligations are what keep your company in good standing. Establishing these habits and engaging a competent accountant from the beginning will save significant time and money in the long run.

For guidance on structuring your business optimally from a tax perspective, see our UK corporate tax planning guide. For an overview of the regulatory environment, consult our UK business laws guide.

Frequently Asked Questions

How much does it cost to register a company in the UK?

The standard online registration fee through Companies House is 12 GBP (approximately $15 USD). Same-day incorporation costs 30 GBP. Paper filing by post costs 40 GBP. These are the government fees only and do not include optional costs such as a registered office service, formation agent, or accountant.

How long does it take to register a UK company?

Online registration through Companies House typically takes 24 hours or less, with many applications processed within 3 to 6 hours. Same-day service guarantees incorporation on the same working day if submitted before 3pm. Paper applications by post take 8 to 10 working days.

Can a foreigner register a company in the UK?

Yes. There is no requirement for directors or shareholders to be UK residents or UK citizens. Any person aged 16 or over from any country can form a UK limited company. However, you do need a registered office address in England and Wales, Scotland, or Northern Ireland depending on where the company is registered.

Do I need a UK address to register a company?

Yes. Every UK company must have a registered office address in the same jurisdiction where the company is incorporated (England and Wales, Scotland, or Northern Ireland). This address is public and appears on the Companies House register. Many entrepreneurs use a registered office service, which costs 50 to 300 GBP per year.