Types of Companies in the UK: A Big Overview of Company Structures and Business Entities

Introduction

The United Kingdom has a wide variety of business structures, but the word “company” does not describe every form in which a business can operate.

A person starting a business may operate as a sole trader, form an ordinary partnership, establish a limited liability partnership (LLP), or incorporate a company. Even within the category of companies, there are several different legal forms, each with its own rules concerning ownership, liability, management, capital, taxation, reporting, and public disclosure.

Understanding these distinctions is important because choosing a business structure is not merely an administrative decision. It can affect who owns the business, who is responsible for its debts, how profits are distributed, what information becomes publicly available, how the business is taxed, and what legal obligations its owners and managers assume.

Under UK company law, most companies are incorporated by registration under the Companies Act 2006. Companies are generally registered through Companies House and acquire a legal identity separate from their members. GOV.UK explains that the principal company forms under the Companies Act 2006 include private limited companies, public limited companies, and private unlimited companies.

The most common structure by a very large margin is the private company limited by shares. Companies House statistics for the financial year ending March 2026 show that private limited companies accounted for more than 95% of corporate bodies on the register.

But the prevalence of one form should not obscure the legal differences between the available structures.

This article provides a broad overview of the principal types of companies and closely related business entities found in the UK.

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Facts About Companies in the UK Structures

Before looking at individual company types, several basic facts are worth keeping in mind:

• A company is a separate legal entity from the people who own or manage it.
• Most UK companies are incorporated by registration under the Companies Act 2006.
• A company may be limited by shares, limited by guarantee, or unlimited, depending on its legal form.
• A private company cannot offer its shares to the general public.
• A public limited company can offer shares to the public, subject to the statutory requirements applicable to public companies.
• A company limited by shares normally has shareholders.
• A company limited by guarantee has members known as guarantors rather than shareholders.
• Limited liability generally protects members from personal liability beyond the amount legally committed through their shares or guarantee, although limited liability is not an absolute protection against every form of personal liability.
• A company must comply with continuing filing and reporting obligations, including obligations concerning accounts and confirmation statements.
• A limited liability partnership (LLP) is a separate legal entity but is not a company in the same legal sense as a company incorporated under the Companies Act 2006.
• A community interest company (CIC) is a special type of company designed for community benefit.
• A sole trader and an ordinary partnership are not companies.
• Tax treatment does not always follow the same classification as company-law structure. For example, an LLP has separate legal personality but is generally taxed as a partnership.

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1. What Is a Company?

A company is a legal entity created under legislation or another recognised legal mechanism.

The central concept is separate legal personality.

Once incorporated, the company is legally distinct from its shareholders and directors. It can own property, enter contracts, incur debts, employ people, bring legal proceedings, and have proceedings brought against it in its own name.

This principle is one of the foundations of modern company law.

It also explains why the debts of a company are ordinarily the debts of the company rather than automatically the personal debts of its shareholders.

The distinction became particularly important after the development of modern limited liability companies. The classic principle is associated with the House of Lords decision in Salomon v A Salomon & Co Ltd [1897] AC 22, which established that a properly incorporated company possesses a legal personality separate from its members.

The principle remains fundamental to UK company law.

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2. Private Companies and Public Companies

One of the most important distinctions is between a private company and a public company.

The distinction concerns more than the size of the business.

A private company is subject to restrictions concerning the offering of its shares to the public. A public limited company, by contrast, is capable of offering shares to the public, subject to the applicable legal and regulatory requirements.

The names normally indicate the distinction:

• a private limited company commonly ends with “Limited” or “Ltd”;
• a public limited company normally ends with “plc”.

A private company can be very large. “Private” does not necessarily mean small.

Similarly, a public company is not simply a company with many shareholders. The legal classification depends on its corporate form and the statutory rules governing it.

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3. Private Company Limited by Shares

The private company limited by shares is the most common company structure in the UK.

It is the structure most people have in mind when they talk about “setting up a limited company.”

A company limited by shares has:

• shareholders;
• share capital;
• directors;
• a separate legal personality; and
• liability of members limited according to the statutory share structure.

GOV.UK explains that a shareholder’s liability is generally limited to the amount unpaid on the shares held by that shareholder. A company may have only one shareholder, and that shareholder may also be the company’s sole director.

How ownership works

Ownership is represented through shares.

For example, a company might issue:

• 100 ordinary shares;
• 1,000 ordinary shares; or
• several different classes of shares carrying different rights.

The number and class of shares can affect voting rights, dividend rights, and rights on a winding up.

A company with one shareholder can therefore be entirely owned by one person.

A company with several shareholders can divide ownership among those shareholders.

Limited liability

Suppose a person holds shares on which £100 remains unpaid.

Ordinarily, the shareholder’s liability in relation to those shares is limited to the amount remaining unpaid.

This is an important distinction between the company’s obligations and the shareholder’s obligations.

However, limited liability should not be misunderstood as a guarantee that directors or shareholders can never become personally liable. Personal guarantees, wrongful or fraudulent conduct, certain statutory liabilities, and other circumstances can create personal exposure.

Who normally uses this structure?

Private companies limited by shares are commonly used by:

• small businesses;
• family businesses;
• professional and commercial enterprises;
• technology companies;
• online businesses;
• consultancy businesses;
• growing companies seeking investment; and
• subsidiaries of larger corporate groups.

It is often the natural structure where the business is intended to generate profits for its owners.

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4. Private Company Limited by Guarantee

A company limited by guarantee is fundamentally different from a company limited by shares.

Instead of shareholders holding shares, it has members known as guarantors.

Each guarantor agrees to contribute a specified amount if the company becomes unable to meet its obligations in circumstances where the guarantee becomes enforceable.

GOV.UK explains that companies limited by guarantee do not have share capital and commonly operate in the non-profit or charitable sector. Their members have a guaranteed amount rather than shares.

The guarantee may be a relatively small amount.

Why use a guarantee company?

This structure is particularly suitable where the organisation is not designed primarily to distribute profits to private shareholders.

Examples can include:

• charities;
• professional associations;
• clubs;
• membership organisations;
• cultural organisations;
• educational organisations;
• community organisations; and
• other non-profit bodies.

Not every company limited by guarantee is automatically a charity.

Charitable status is a separate legal and regulatory matter.

What happens to profits?

A guarantee company may generate income and make a surplus.

The important question is what its constitutional documents and legal status permit it to do with that money.

In organisations designed for non-profit purposes, money is generally retained and applied toward the organisation’s objectives rather than distributed to private shareholders.

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5. Public Limited Companies (PLCs)

A public limited company, commonly abbreviated as plc, is a company capable of offering its shares to the public.

This makes the structure particularly important for businesses seeking access to substantial equity capital.

However, becoming a plc does not automatically mean that its shares are traded on a stock exchange.

This is a common misconception.

A company may be a public limited company without being listed on the London Stock Exchange or another securities market.

Listing is a separate matter involving additional regulatory and market requirements.

Why use a plc?

A public company may be appropriate for an organisation that:

• requires significant external capital;
• intends to offer shares to investors;
• has a large shareholder base;
• may seek admission of securities to a regulated market or other trading venue; or
• has reached a scale where a public-company structure is appropriate.

Public companies are subject to additional statutory requirements.

For example, Companies House and HMRC materials recognise the distinction between private companies, which cannot offer their shares to the public, and public limited companies, which can do so subject to the statutory framework.

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6. Unlimited Companies

Not every company has limited liability.

The unlimited company is a much less common form in which members do not enjoy the same statutory limitation of liability that applies to members of a limited company.

An unlimited company may be:

• a private unlimited company; or
• another recognised unlimited corporate form under the Companies Act framework.

The principal attraction is therefore not limited liability.

The structure may nevertheless have advantages in particular corporate or commercial circumstances, especially where the owners do not want the ordinary limited-company model.

Because unlimited liability can create substantial financial exposure for members, this form is considerably less common than the private company limited by shares.

Companies House statistics and definitions recognise private unlimited companies and private unlimited companies without share capital as corporate types under the Companies Act 2006 framework.

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7. Limited Liability Partnerships (LLPs)

A limited liability partnership occupies an interesting position in UK business law.

It combines some characteristics of a partnership with some characteristics of a company.

An LLP:

• is a separate legal entity;
• has members rather than shareholders;
• has no share capital in the ordinary company-law sense;
• provides limited liability to its members;
• has considerable organisational flexibility; and
• is generally taxed as a partnership rather than as an ordinary company.

Companies House states that an LLP can be formed by two or more members and that its members are generally not personally liable for the business’s debts.

The Companies House guidance updated in 2026 describes the LLP as a form of legal business entity with limited liability and emphasises the difference between its partnership-style organisation and the structure of a limited company.

Why are LLPs important?

LLPs are particularly significant in professional services.

They are commonly associated with:

• law firms;
• accountancy firms;
• consultancy businesses;
• professional practices;
• investment and financial businesses; and
• other enterprises in which several professionals wish to operate together.

The LLP can provide the flexibility of partnership arrangements while offering limited liability.

This combination explains why LLPs have become an important feature of modern UK business law.

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8. Limited Partnerships

A limited partnership (LP) should not be confused with an LLP.

A limited partnership normally has:

• at least one general partner; and
• one or more limited partners.

The general partner has unlimited liability for the partnership’s obligations.

Limited partners have liability generally limited to their contribution, subject to the statutory rules governing limited partnerships.

A crucial distinction is that a traditional limited partnership does not have the same separate legal personality as an LLP.

HMRC describes the limited partnership as a partnership structure in which at least one partner has unlimited liability, while the liability of limited partners is restricted subject to the statutory framework.

Limited partnerships are particularly relevant in areas such as investment structures and private funds.

They should therefore be regarded as a distinct partnership structure rather than simply another form of limited company.

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9. Community Interest Companies (CICs)

A community interest company, or CIC, is a special form of company designed for organisations that conduct activities for community benefit.

A CIC may be:

• limited by shares; or
• limited by guarantee.

The important feature is its community purpose.

A CIC is therefore not simply another name for a non-profit company.

It is a statutory corporate form subject to a specific regulatory regime, including the concept of the community interest test and restrictions designed to ensure that the company’s assets and activities serve the community purpose.

CICs can be useful where an organisation wants to operate commercially while placing its activities within a legally recognised community-benefit framework.

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10. Charitable Incorporated Organisations

A Charitable Incorporated Organisation (CIO) is another important structure, particularly in England and Wales.

A CIO is incorporated and has a separate legal personality, but it is not simply a company registered under the Companies Act 2006.

Instead, it is a distinct legal structure created specifically for charitable organisations.

One important practical feature is that a CIO is generally registered with the Charity Commission rather than being a Companies House company.

This makes the CIO different from a charitable company limited by guarantee.

The distinction is important because the words “charity” and “company” describe different concepts.

A charity may use several legal structures, including a charitable company limited by guarantee or a CIO.

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11. Investment Companies and Special Corporate Forms

The UK corporate register contains more corporate forms than the ordinary business structures encountered by most entrepreneurs.

Companies House statistics identify a number of specialised corporate body types, including investment companies with variable capital and various other entities created under particular legislation.

These structures can be highly specialised.

For example, investment companies with variable capital can be used in collective investment arrangements where flexibility in the company’s capital structure is particularly important.

They should not normally be treated as alternatives to the ordinary private limited company for a person starting a small business.

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12. Holding Companies and Subsidiary Companies

A holding company is not a separate statutory company type in the same sense as “private company limited by shares” or “public limited company.”

Rather, it describes a company’s role within a corporate structure.

A holding company may own shares in one or more other companies.

Those other companies may be its subsidiaries.

For example:

Parent company → Subsidiary A

Parent company → Subsidiary B

Parent company → Subsidiary C

Each entity remains legally distinct, even though they may form part of the same corporate group.

This structure is frequently used to separate business activities, assets, investments, intellectual property, or different commercial risks.

The fact that companies belong to the same group does not automatically eliminate their separate legal identities.

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13. Dormant Companies

A dormant company is not a separate company type.

“Dormant” describes the company’s activity for accounting or tax purposes.

A company may become dormant because it:

• has not yet started trading;
• has stopped trading;
• is being retained for a future purpose; or
• has no significant accounting transactions during the relevant period.

A dormant company nevertheless remains incorporated.

It can therefore continue to have filing and other statutory obligations.

The distinction matters because people sometimes assume that a dormant company has ceased to exist.

It has not.

A company that has been formally dissolved is a different matter.

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14. Shelf Companies and Ready-Made Companies

A shelf company or “ready-made company” is also not a distinct statutory type.

It is generally an existing incorporated company that has been formed in advance and may subsequently be sold or transferred to another person.

The company may then change its:

• name;
• directors;
• shareholders;
• registered office; and
• other corporate information.

Modern online incorporation has reduced the practical importance of traditional shelf companies because a new company can usually be incorporated relatively quickly.

Nevertheless, the concept remains useful for understanding that company “types” and commercial labels are not always the same thing.

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15. Sole Traders Are Not Companies

One of the most important distinctions in UK business law is between a company and a sole trader.

A sole trader operates a business personally.

There is no separate company standing between the individual and the business.

Consequently, the sole trader is generally personally responsible for the business’s debts and obligations.

A sole trader also does not become a company merely because the business has:

• employees;
• a trading name;
• a business bank account;
• substantial turnover; or
• a registered trademark.

The legal structure remains fundamentally different from an incorporated company.

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16. Ordinary Partnerships Are Not Companies

An ordinary partnership is also different from a company.

Under the traditional partnership model, two or more persons carry on business together with a view to profit.

The partnership does not operate in the same way as a company incorporated under the Companies Act 2006.

The partners generally have personal responsibility for partnership obligations, subject to the detailed rules of partnership law.

The distinction is particularly important when comparing an ordinary partnership with an LLP.

An LLP provides a separate legal personality and limited liability, whereas an ordinary partnership generally does not provide the same corporate shield.

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17. Company Structure and Limited Liability

The phrase “limited liability” is central to understanding UK company law.

But limited liability has a precise legal meaning.

It does not mean:

“The people behind the company can never be personally responsible for anything.”

Instead, it normally means that the liability of members to contribute toward the company’s debts is limited according to the company’s legal form.

In a company limited by shares, the relevant limitation is connected with the shares.

In a company limited by guarantee, it is connected with the guaranteed amount.

This distinction is particularly important when advising people about the practical consequences of incorporation.

A company may protect its shareholders from ordinary corporate debts while its directors or other individuals may still have personal liability arising from their own conduct or separate legal commitments.

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18. Directors, Shareholders, and Members

Different company structures use different terminology.

Shareholders

Shareholders are members of a company limited by shares.

They hold shares and may have rights concerning:

• voting;
• dividends;
• transfer of shares; and
• distribution of assets on a winding up.

Directors

Directors manage the company and are responsible for exercising the powers of the company in accordance with company law, the company’s constitution, and their legal duties.

A director is not necessarily an owner.

A company can therefore have:

• one shareholder and several directors;
• several shareholders and one director; or
• multiple shareholders and directors.

Members

“Member” is a broader company-law concept.

In a company limited by guarantee, the members are guarantors rather than shareholders.

In an LLP, the participants are generally called members.

The terminology therefore matters.

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19. Share Capital and Ownership

A company limited by shares has share capital.

But share capital should not be confused with the market value of the company.

For example, a company might issue 100 ordinary shares at £1 each.

Its nominal share capital would be £100.

That does not mean the business is worth only £100.

A company’s commercial value may be much greater or much lower than its nominal share capital.

GOV.UK expressly explains that share capital is not the same thing as the value of the company.

Shares can also carry different rights.

For example, different classes of shares may have different:

• voting rights;
• dividend rights;
• redemption rights; or
• rights on a winding up.

This flexibility makes the company limited by shares particularly useful for investment and ownership arrangements.

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20. Companies House and Corporate Transparency

Most UK companies incorporated under the Companies Act 2006 are registered with Companies House.

Companies House maintains the public register of companies and receives information concerning matters such as:

• incorporation;
• directors;
• registered office;
• people with significant control;
• accounts;
• confirmation statements; and
• certain corporate changes.

Incorporation therefore brings transparency as well as legal personality.

Companies cannot simply enjoy the benefits of incorporation while ignoring the administrative obligations that accompany it.

GOV.UK states that companies must file documents such as annual accounts and confirmation statements and notify Companies House of certain changes.

The corporate register is consequently an important part of the UK’s system of commercial transparency.

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21. People with Significant Control

Modern UK company law also focuses on identifying the people who ultimately exercise significant control over companies.

These persons are generally known as People with Significant Control (PSCs).

For example, GOV.UK explains that a shareholder who owns more than 25% of the shares or voting rights will generally fall within the PSC framework, subject to the detailed statutory rules.

The PSC regime is designed to increase transparency about who ultimately controls corporate entities.

This is particularly important in the context of:

• corporate transparency;
• financial crime prevention;
• money laundering risks;
• ownership structures; and
• corporate accountability.

The legal framework has also been developing in recent years, including measures arising from the Economic Crime and Corporate Transparency Act 2023.

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22. Company Type and Taxation Are Not the Same Question

A common mistake is to assume that choosing a legal structure automatically answers the tax question.

It does not.

Company law and tax law overlap, but they are separate legal systems.

For example:

• a company limited by shares is generally within the Corporation Tax regime;
• an LLP is generally taxed on a partnership basis;
• an ordinary partnership generally passes profits through to its partners;
• a sole trader is taxed personally on business profits; and
• shareholders can have personal tax consequences when receiving dividends.

The tax position may also depend on residence, activities, income, transactions, employees, assets, and other factors.

This is why choosing a business structure should not be based solely on the phrase “limited liability.”

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23. The UK Is Not One Completely Uniform Business-Law System

The expression “company law in the UK” requires some care.

Companies House operates across:

• England;
• Wales;
• Scotland; and
• Northern Ireland.

The Companies Act 2006 provides a major common framework for UK company law.

However, the broader legal environment is not completely uniform.

For example, Scotland has its own legal system, while certain areas surrounding taxation, property, courts, insolvency administration, and local regulation may involve different rules or institutions.

This means that a business incorporated in Scotland is not simply an English company operating in a different geographical location.

The corporate framework is UK-wide in important respects, but other areas of law remain jurisdiction-specific.

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24. A Simple Comparison of the Main Structures

Structure	Separate legal personality?	Limited liability?	Ownership/participants	Typical use
Private company limited by shares	Yes	Yes	Shareholders	Ordinary commercial businesses
Public limited company (plc)	Yes	Yes	Shareholders	Larger businesses and public investment
Private company limited by guarantee	Yes	Yes, by reference to guarantee	Guarantor-members	Non-profit and membership organisations
Private unlimited company	Yes	No ordinary statutory limitation	Members/shareholders	Special corporate purposes
LLP	Yes	Yes	Members	Professional and commercial partnerships
Limited partnership	Generally no separate personality	Limited for limited partners, subject to rules	General and limited partners	Investment and specialised partnerships
Ordinary partnership	No separate corporate personality	Generally no	Partners	Small and professional businesses
Sole trader	No	No	Individual	Individual businesses
CIC	Yes	Depends on whether shares or guarantee	Shareholders or guarantors	Community-benefit enterprises
CIO	Yes	Separate statutory framework	Charity trustees/members	Charitable organisations

The table is a starting point rather than a substitute for the detailed legal rules applying to each structure.

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25. How Do You Choose Between the Structures?

There is no universal “best” structure.

The appropriate structure depends on the nature and objectives of the enterprise.

Important questions include:

Is the business intended to make profits for its owners?

If yes, a private company limited by shares may be appropriate.

Will several professionals operate together?

An LLP may be worth considering.

Is the organisation intended primarily for community or non-profit purposes?

A company limited by guarantee, CIC, or CIO may be relevant, depending on the objectives and regulatory requirements.

Is public investment contemplated?

A plc may become relevant, although becoming a public company is only one part of the process of accessing public capital markets.

Is personal liability acceptable?

A sole trader or ordinary partnership involves substantially different liability consequences from a limited company or LLP.

Does the business need a group structure?

A holding company and subsidiary structure may be appropriate where several businesses or activities need to be organised under common ownership.

What are the tax consequences?

The structure should be examined alongside the applicable tax rules rather than after the decision has already been made.

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26. Why Company Structure Matters

The choice of business structure can influence almost every major aspect of an enterprise.

It can affect:

Liability
Who is responsible when the business owes money?

Ownership
Who owns the enterprise?

Management
Who has authority to make decisions?

Investment
Can investors acquire shares or other interests?

Taxation
How are profits and distributions taxed?

Reporting
What information must be filed publicly?

Continuity
What happens if an owner dies, leaves, or transfers their interest?

Financing
Can the business raise capital through equity or debt?

Regulation
Which statutory and regulatory regimes apply?

Consequently, incorporation should not be regarded merely as a way of obtaining the letters “Ltd” after a business name.

It creates a legal structure.

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27. The Deeper Principle: The Company as a Legal Person

Perhaps the most important idea behind all of these structures is that company law separates the enterprise from the individual human beings behind it.

The company is a legal person.

Its shareholders are not normally the company.

Its directors are not normally the company.

Its creditors are not automatically creditors of its shareholders.

Its property is not ordinarily the personal property of its shareholders.

This conceptual separation allows modern commerce to operate through entities that can survive changes in ownership and management.

A company may continue even when its original founder has died, sold the shares, resigned as director, or disappeared from the business entirely.

That continuity is one of the great achievements of modern corporate law.

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Key Takeaways

1. “Company” does not mean every type of UK business. Sole traders and ordinary partnerships are different legal structures.
2. The private company limited by shares is the dominant UK corporate form. Companies House statistics for the year ending March 2026 show it represented more than 95% of corporate bodies on the register.
3. Private and public companies are different. A private company cannot offer its shares to the public, while a plc can do so subject to the applicable statutory and regulatory requirements.
4. Companies can be limited by shares or by guarantee. The former normally has shareholders and share capital; the latter has guarantors and no share capital.
5. Unlimited companies exist. They do not provide the ordinary statutory limitation of members’ liability.
6. An LLP is not simply another name for a limited company. It has separate legal personality and limited liability but retains important partnership characteristics and is generally taxed as a partnership.
7. A limited partnership is different from an LLP. It normally has at least one general partner with unlimited liability and one or more limited partners.
8. A CIC is a special community-benefit company structure.
9. A holding company is a role within a corporate group rather than a separate statutory company type.
10. Dormant and shelf companies are descriptions of circumstances or commercial arrangements, not ordinary statutory company categories.
11. Companies House registration creates important transparency obligations. Companies generally have continuing filing and reporting duties.
12. Choosing a business structure involves more than limited liability. Ownership, governance, taxation, investment, reporting, and the purpose of the organisation all matter.

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Frequently Asked Questions

What is the most common type of company in the UK?

The most common type is the private company limited by shares. Companies House statistics for the year ending March 2026 show more than 5.27 million private limited companies on the register, representing over 92% of all corporate bodies recorded in the statistics.

What is the difference between Ltd and plc?

An Ltd is normally a private limited company. A plc is a public limited company.

A private company cannot offer its shares to the general public. A public limited company can offer shares to the public subject to the applicable legal requirements.

Can a company have only one shareholder?

Yes. A private company limited by shares can have a single shareholder. That person can also be the company’s sole director.

Can a company have only one director?

A private company can generally have one director, provided the statutory requirements are satisfied.

Public companies are subject to different requirements and must have at least two directors.

What is a company limited by guarantee?

It is a company whose members are guarantors rather than shareholders.

Each guarantor agrees to contribute a specified amount if the guarantee becomes enforceable. These companies are commonly used by non-profit and membership organisations.

Is an LLP a company?

Not in the strict company-law sense.

An LLP is a separate legal business entity created under the Limited Liability Partnerships Act 2000 and related legislation. It combines elements of partnership organisation with limited liability and separate legal personality.

What is the difference between an LLP and an ordinary partnership?

An LLP has separate legal personality and limited liability for its members.

An ordinary partnership does not have the same corporate personality and partners generally have personal responsibility for partnership obligations.

What is the difference between an LLP and a limited partnership?

An LLP is a separate legal entity with limited liability for its members.

A traditional limited partnership generally does not have separate legal personality and must have at least one general partner with unlimited liability.

Is a CIC a charity?

Not automatically.

A community interest company is a company designed to operate for community benefit. A charity is subject to a separate legal and regulatory framework.

A CIC and a charity can therefore overlap in purpose without being legally identical.

Is a holding company a separate type of company?

No.

“Holding company” describes the company’s function within a corporate structure. A holding company can itself be a private limited company, public company, or another appropriate corporate form.

Can a UK company operate internationally?

Yes.

A UK-incorporated company can conduct business internationally, establish foreign subsidiaries or branches, and enter international contracts. However, doing business abroad can create additional legal, tax, employment, regulatory, and reporting obligations in other jurisdictions.

Does registering a company protect the owners from every liability?

No.

Limited liability generally limits the liability of members in relation to the company’s obligations, but it does not provide absolute personal immunity.

For example, separate personal guarantees, fraud, certain breaches of duty, insolvency-related conduct, or other legal circumstances may create personal liability.

Does every UK business need to become a limited company?

No.

A person may operate as a sole trader or partnership, depending on the circumstances. An LLP or another corporate structure may also be appropriate.

The choice depends on the business and its legal, financial, tax, and organisational requirements.

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Conclusion

The phrase “types of companies in the UK” hides a much more sophisticated legal landscape than the familiar distinction between “Ltd” and “plc.”

The UK corporate framework includes private companies limited by shares, companies limited by guarantee, public limited companies, unlimited companies, and a range of specialised corporate structures. Alongside them are related but legally distinct entities such as LLPs, limited partnerships, ordinary partnerships, sole traders, CICs, and CIOs.

The fundamental question is therefore not simply whether a person should “form a company.”

The deeper question is what legal relationship should exist between the people, the business, its assets, its creditors, its investors, and the wider public?

Company law provides several answers to that question.

The private limited company separates ownership from the company’s legal personality and offers limited liability. The public company creates a structure capable of accessing public investment. The company limited by guarantee provides a corporate form without traditional share ownership. The LLP combines partnership flexibility with corporate personality and limited liability. Special structures such as CICs allow corporate activity to be organised around community purposes.

Understanding these distinctions is essential because a business structure is not merely a name on a registration certificate. It is the legal architecture through which the business exists.

For anyone starting, investing in, managing, or advising a UK business, understanding that architecture is one of the foundations of modern commercial law.