LW · Certificate Level

Company Law — Formation and Constitution

Types of company (limited by shares, limited by guarantee, unlimited, private, public), the process of formation and registration at Companies House, the articles of association (model articles, amendment, effect), the doctrine of separate legal personality (Salomon v Salomon) and its consequences, circumstances in which the courts will lift the corporate veil, company name rules, the registered office, and the objects clause (capacity and ultra vires).

30 min read

Learning Objectives

  • Distinguish between companies limited by shares, companies limited by guarantee, and unlimited companies
  • Distinguish between private and public companies and explain the key differences
  • Describe the process of forming and registering a company at Companies House
  • Explain the nature, purpose, and legal effect of the articles of association
  • Explain the doctrine of separate legal personality established in Salomon v Salomon and its consequences
  • Identify the circumstances in which the courts may lift the corporate veil
  • Describe the rules governing company names
  • Explain the significance of the registered office
  • Explain the effect of the objects clause and the abolition of the ultra vires doctrine for third parties

Types of Company

Companies incorporated under the Companies Act 2006 (CA 2006) are classified by two characteristics: liability and public/private status.

Classification by liability:

TypeLiability of membersDescription
Limited by sharesLimited to the amount unpaid on their sharesThe most common type. Members (shareholders) are not personally liable for company debts beyond the amount they have agreed to pay for their shares. If shares are fully paid, the member has no further liability.
Limited by guaranteeLimited to the amount guaranteed (usually a nominal sum, e.g., £1)Has no share capital. Members guarantee to contribute a specified amount if the company is wound up. Common for not-for-profit organisations, charities, clubs, and professional bodies.
UnlimitedUnlimited — no limit on members' liabilityRare. Members have unlimited personal liability for the company's debts (similar to a partnership). The advantage is privacy — unlimited companies are exempt from filing accounts publicly at Companies House. Used where confidentiality of financial information is valued (e.g., some professional firms).

Classification by public/private status:

FeaturePrivate company (Ltd)Public company (plc)
SuffixLimited / LtdPublic Limited Company / plc
Minimum share capitalNo minimum (can be £1)£50,000 (at least 25% paid up on allotment)
Minimum directors12
Company secretaryOptionalMandatory — must be a qualified person
Offering shares to the publicProhibitedPermitted (may list on a stock exchange)
Trading certificateNot required — can trade immediately on incorporationRequired (s.761) — must obtain from Companies House before trading or borrowing
AGMNot required (unless articles require it)Must be held within 6 months of accounting reference date
Audit exemptionAvailable if qualifying as small (two of three: turnover ≤£10.2m, BS ≤£5.1m, employees ≤50)Never exempt
Written resolutionsPermitted (s.288)Not permitted — must hold meetings

Formation and Registration

A company is formed (incorporated) by registration with the Registrar of Companies at Companies House (s.7 CA 2006). One or more persons may form a company.

Documents required for registration:

  1. Memorandum of association (s.8): A brief document signed by each subscriber (initial shareholder) stating their intention to form a company and to become members. Under CA 2006, the memorandum is a much simpler document than under previous legislation — it merely evidences the subscribers' intention. It cannot be amended after incorporation.
  2. Application for registration (Form IN01): Contains the proposed company name, whether the company is limited or unlimited and whether by shares or guarantee, whether it is private or public, the registered office address (in England and Wales, Wales, Scotland, or Northern Ireland), a statement of capital and initial shareholdings (for companies limited by shares), a statement of the company's proposed officers (directors and company secretary if applicable), a statement of compliance (confirming legal requirements have been met), and the articles of association (or a statement that model articles will apply).
  3. Fee: Registration fee payable to Companies House (currently £50 for standard online registration, or £30 for same-day incorporation for an additional fee).

Certificate of incorporation: If the Registrar is satisfied that all requirements have been met, a certificate of incorporation is issued (s.15). This is conclusive evidence that the company exists as a legal entity from the date stated on the certificate. The company receives a unique company registration number.

Effect of incorporation: From the date of the certificate, the company has separate legal personality (see below). For a private company, it can begin trading immediately. A public company must first obtain a trading certificate (s.761) by demonstrating that its allotted share capital meets the minimum (£50,000, 25% paid up).

Pre-incorporation contracts: A contract made in the company's name before it is incorporated is not binding on the company (because the company does not yet exist as a legal person). The person who made the contract is personally liable on it (s.51 CA 2006). The company can adopt the contract after incorporation by novation (a new contract replacing the old one with the company as a party).

Articles of Association

The articles of association are the company's internal rulebook — they govern the relationship between the company and its members, and between the members themselves. They regulate the company's internal management and administration.

Key provisions typically found in the articles:

  • Rights attached to shares (voting rights, dividend rights, rights on winding up)
  • Transfer and transmission of shares (restrictions on transfer, pre-emption rights)
  • General meetings (calling meetings, quorum, voting, proxies, written resolutions)
  • Appointment, removal, and powers of directors
  • Directors' meetings (procedure, quorum, conflicts of interest)
  • Dividends and distributions
  • Accounts, reports, and audit

Model articles: CA 2006 provides model articles (prescribed by the Companies (Model Articles) Regulations 2008) for private companies limited by shares, private companies limited by guarantee, and public companies. If a company does not register its own bespoke articles, the model articles apply automatically. Most companies adopt the model articles, sometimes with modifications.

Legal effect of the articles (s.33 CA 2006):

  • The articles constitute a statutory contract between the company and each member, and between the members themselves
  • This contract is enforceable only in their capacity as members — it does not create rights for outsiders (Eley v Positive Government Security Life Assurance Co [1876] — a solicitor named in the articles as the company's solicitor could not enforce this because the right was not in his capacity as a member)
  • The articles can be enforced by: the company against a member, a member against the company, and a member against another member (in their capacity as members)

Amendment of the articles (s.21):

  • The articles can be amended by special resolution (75% majority)
  • An amendment must be bona fide for the benefit of the company as a whole (Allen v Gold Reefs of West Africa [1900]) — an amendment that unfairly discriminates against a minority may be challenged
  • An amendment cannot override the statutory rights of members (e.g., the right to petition for unfair prejudice under s.994)
  • An entrenched provision in the articles may specify that a particular article can only be amended by unanimous consent or stricter conditions than a special resolution (s.22)

The most fundamental principle of company law is separate legal personality: a company incorporated under CA 2006 is a legal person separate from its members (shareholders) and its directors.

Salomon v A Salomon & Co Ltd [1897]:

Mr Salomon transferred his boot-making business to a newly incorporated company (Salomon & Co Ltd). He was the major shareholder, holding 20,001 of 20,007 shares (the other 6 shares were held by family members to meet the then-minimum requirement of 7 shareholders). He also lent money to the company, secured by a debenture (floating charge). When the company became insolvent, the liquidator argued that the company was just Mr Salomon in another guise and that his debenture should rank behind the unsecured creditors.

The House of Lords held: The company was a separate legal entity from Mr Salomon. It was not his agent or trustee. The company had been properly incorporated, and therefore its separate personality must be respected. Mr Salomon's debenture was valid, and he ranked ahead of unsecured creditors as a secured creditor.

Consequences of separate legal personality:

  • Limited liability: Members' liability is limited to the amount unpaid on their shares (or their guarantee). The company's debts are the company's, not the members'.
  • Perpetual succession: The company continues to exist regardless of changes in membership. Death, bankruptcy, or departure of a shareholder does not affect the company's existence.
  • Own property: The company owns its assets in its own right. A shareholder has no direct ownership of company assets — they own shares in the company.
  • Contractual capacity: The company can enter into contracts, sue, and be sued in its own name.
  • Criminal liability: A company can be prosecuted for criminal offences (e.g., health and safety breaches, fraud, corporate manslaughter).
  • Separate taxation: The company is taxed on its profits (corporation tax) separately from the personal tax of its shareholders.

Lifting the Corporate Veil

In exceptional circumstances, the courts will "lift" or "pierce" the corporate veil — looking behind the company's separate personality to hold the members or controllers personally liable for the company's actions or debts. The courts are very reluctant to do this and will only lift the veil in narrow circumstances.

Statutory provisions that lift the veil:

  • Fraudulent trading (s.213 Insolvency Act 1986): If the company's business has been carried on with intent to defraud creditors, the court may declare any persons knowingly party to the fraud personally liable for the company's debts. This is also a criminal offence.
  • Wrongful trading (s.214 Insolvency Act 1986): If a director knew or ought to have known that there was no reasonable prospect of avoiding insolvent liquidation and did not take every step to minimise potential loss to creditors, the court may order the director to contribute to the company's assets.
  • Disqualified directors: Under the Company Directors Disqualification Act 1986 (CDDA), a disqualified person who acts as a director (or is involved in management) is personally liable for the company's debts incurred during the period of disqualification.
  • Failure to use the correct company name: An officer who signs a cheque, bill, or order that does not bear the company's correct name may be personally liable on the instrument (s.83 CA 2006).

Common law / judicial lifting of the veil:

  • Sham or façade: The court may lift the veil where the company is a sham or façade — i.e., it was set up to evade an existing obligation or deceive (Gilford Motor Co v Horne [1933] — a former employee set up a company to circumvent a restraint of trade clause; the veil was lifted). The leading modern authority is Prest v Petrodel Resources Ltd [2013] — the Supreme Court confirmed the veil can be pierced only where the company was used to evade an existing legal obligation (the "evasion principle"), not merely to conceal the identity of the true controller (the "concealment principle" — which does not require piercing).
  • Agency: If the company is acting as agent for the member(s), the principal behind the company may be liable. But the court will not easily infer an agency relationship simply from the existence of a parent-subsidiary structure.
  • Groups of companies: Each company in a group has its own separate legal personality. A parent company is not normally liable for the debts of its subsidiary simply because it is a member. However, the veil may be lifted if the subsidiary is a mere façade or if the parent assumed a direct duty of care to persons affected by the subsidiary's actions (Chandler v Cape plc [2012]).

Key exam point: The courts are very reluctant to lift the veil. The Salomon principle is deeply entrenched. The veil will only be lifted in exceptional cases — typically involving fraud, evasion of obligations, or where statute requires it.

Company Name Rules

Restrictions on company names (ss.53-85 CA 2006):

  • The last word of the name must be "Limited" (Ltd) for private companies or "Public Limited Company" (plc) for public companies (or Welsh equivalents)
  • The name must not be the same as an existing company name on the register ("same as" test — Companies House will reject identical or near-identical names)
  • The name must not be offensive
  • Certain words and expressions require prior approval from the Secretary of State or a relevant body — e.g., "Royal", "Queen", "King", "Bank", "Insurance", "Chartered", "University", "Association", "Authority", "Council". These words imply status or government connection.
  • The name must not give a misleading impression of the company's activities
  • A company limited by guarantee that is a charity may be exempt from using "Limited" in its name if it meets certain conditions

Display of the company name: The company must display its name at its registered office and any place of business, on all business letters, order forms, notices, official publications, bills of exchange, promissory notes, cheques, endorsements, invoices, and the company's website.

Change of name (s.77): A company can change its name by special resolution (75% majority). The Registrar issues a new certificate of incorporation with the new name. A change of name does not affect the company's rights or obligations.

Registered Office

Every company must have a registered office to which all official communications and notices can be addressed (s.86 CA 2006). The registered office must be in the part of the UK in which the company was registered (England and Wales, Wales, Scotland, or Northern Ireland).

Significance:

  • Determines the jurisdiction and which court has authority over the company
  • Determines which Registrar the company files with (Companies House in Cardiff or Edinburgh)
  • Is the address for service of legal documents (writs, court proceedings, statutory notices)
  • Certain statutory registers and records must be kept available for inspection at the registered office (or a single alternative inspection location — SAIL)

The registered office address can be changed by giving notice to Companies House (ordinary resolution for private companies), but the company cannot change the jurisdiction (e.g., from England and Wales to Scotland).

Objects Clause and Company Capacity

Historically, companies had an objects clause in their memorandum specifying the activities the company was authorised to carry on. Acts beyond the objects clause were ultra vires (beyond the company's powers) and void.

Under CA 2006:

  • Unless the articles specifically restrict the company's objects, the company has unrestricted objects (s.31). This means the company can carry on any lawful activity.
  • If the articles do contain an objects restriction, any act beyond those objects is technically ultra vires. However, s.39 CA 2006 provides that the validity of an act done by a company shall not be questioned on the ground of lack of capacity by reason of anything in its constitution (articles). This protects third parties dealing in good faith — a contract with a third party cannot be set aside merely because it was beyond the company's objects.
  • The ultra vires doctrine is therefore effectively abolished as far as third parties are concerned. However, shareholders can still seek an injunction to restrain an ultra vires act before it occurs (s.40). And directors who authorise ultra vires acts may be in breach of their duty to act within their powers (s.171).

Directors' authority: Even if the company has capacity, a director may lack the authority to bind the company. However, s.40 CA 2006 protects third parties dealing with the company in good faith — the power of the directors to bind the company is deemed to be free of any limitation under the company's constitution. The third party is not required to investigate whether the directors have authority.

Examiner Focus

Salomon v Salomon is the most important company law case and is tested regularly. Know the facts, the decision, and the CONSEQUENCES of separate legal personality (limited liability, perpetual succession, own property, contractual capacity, criminal liability, separate taxation). Be able to apply the principle to scenarios.

Common Pitfall

Students often assume the corporate veil will be lifted whenever it seems "unfair" that shareholders are protected. This is wrong — the courts are very reluctant to lift the veil. Know the NARROW exceptions: statutory (fraudulent/wrongful trading, disqualified directors) and common law (sham/façade, evasion of existing obligation — Prest v Petrodel). The veil is NOT lifted merely because the company is a "one-man company" or because a parent owns 100% of a subsidiary.

Study Tip

Know the key differences between private and public companies: plc needs £50,000 minimum capital, 2 directors, qualified secretary, trading certificate, AGM, cannot use written resolutions, can offer shares to the public. Private companies have fewer requirements and more flexibility.

Examiner Focus

Articles of association: know that they form a statutory contract (s.33) between company and members, and between members — but NOT between the company and outsiders. Amended by special resolution (75%). Must be bona fide for the benefit of the company as a whole.

Watch Out

Pre-incorporation contracts: the PERSON who made the contract is personally liable — NOT the company (because the company did not exist when the contract was made). The company can only become a party through novation (a new contract) after incorporation. s.51 CA 2006.

Study Tip

Ultra vires is effectively abolished for THIRD PARTIES (s.39 CA 2006 — they are protected). But directors who authorise ultra vires acts may breach their duty under s.171 (duty to act within powers). Shareholders can still seek an injunction BEFORE an ultra vires act occurs.

Key Definitions

Company limited by shares

A company where members' liability is limited to the amount unpaid on their shares. The most common type of company.

Company limited by guarantee

A company with no share capital where members guarantee to contribute a specified amount on winding up. Common for not-for-profit organisations.

Unlimited company

A company where members have unlimited personal liability. Rare; the advantage is exemption from public filing of accounts.

Certificate of incorporation

The document issued by the Registrar of Companies confirming that a company has been formed. Conclusive evidence that the company exists from the date stated.

Memorandum of association

Under CA 2006, a brief document signed by each subscriber stating their intention to form a company and become members. Cannot be amended after incorporation.

Articles of association

The company's internal rulebook governing the relationship between the company and its members, and between members. Constitutes a statutory contract under s.33 CA 2006.

Model articles

Standard articles prescribed by regulation for use by companies that do not adopt their own bespoke articles. Separate model articles exist for private limited, private guarantee, and public companies.

Special resolution

A resolution requiring a majority of at least 75% of votes cast. Used for important constitutional changes: amending articles, changing the company name, reducing capital.

Separate legal personality

The principle (Salomon v Salomon [1897]) that an incorporated company is a legal person distinct from its members. The company owns its own property, enters contracts, sues and is sued, and is separately taxed.

Lifting/piercing the corporate veil

The exceptional process of looking behind a company's separate personality to hold members or controllers personally liable. Only in narrow circumstances: fraud, evasion of obligations, statutory provisions.

Fraudulent trading (s.213 IA 1986)

Carrying on business with intent to defraud creditors. Persons knowingly party to the fraud may be made personally liable for the company's debts. Also a criminal offence.

Wrongful trading (s.214 IA 1986)

A director continuing to trade when they knew or ought to have known there was no reasonable prospect of avoiding insolvent liquidation. The director may be ordered to contribute to the company's assets.

Ultra vires

An act beyond the company's stated objects or powers. Under CA 2006, the ultra vires doctrine is effectively abolished for third parties dealing in good faith (s.39) — they are protected even if the act exceeds the company's objects.

Pre-incorporation contract

A contract made in the company's name before incorporation. Not binding on the company. The person who made the contract is personally liable (s.51 CA 2006).

Registered office

The official address of the company, required by law. Determines jurisdiction, is the address for service of legal documents, and is where certain statutory registers must be kept.

Key Formulas

Worked Examples

Key Takeaways

  • Companies are classified by liability (limited by shares, limited by guarantee, unlimited) and by status (private Ltd, public plc). Key plc requirements: £50,000 minimum capital, 2 directors, qualified secretary, trading certificate, AGM, no written resolutions.
  • Formation: register with Companies House (memorandum, application form IN01, fee). Certificate of incorporation = conclusive evidence of existence. Private companies can trade immediately; plcs need a trading certificate.
  • Articles of association are the company's internal rulebook. Model articles apply by default. Constitute a statutory contract (s.33) between company and members, and between members — but not with outsiders. Amended by special resolution (75%).
  • Separate legal personality (Salomon v Salomon [1897]): the company is a legal person distinct from its members. Consequences: limited liability, perpetual succession, own property, contractual capacity, criminal liability, separate taxation.
  • Lifting the corporate veil is exceptional. Statutory: fraudulent trading (s.213 IA), wrongful trading (s.214 IA), disqualified directors, incorrect company name. Common law: sham/façade, evasion of existing obligation (Prest v Petrodel).
  • The veil is NOT lifted merely because a company is a "one-man company" or because a parent owns 100% of a subsidiary. The Salomon principle is the default.
  • Company names: must end Ltd (private) or plc (public). Cannot be same as existing name, offensive, or misleading. Certain words need approval. Display on all documents and premises.
  • Registered office determines jurisdiction and is the address for service of legal documents. Cannot change jurisdiction.
  • Ultra vires effectively abolished for third parties (s.39 CA 2006 protects them). Directors authorising ultra vires acts may breach s.171 duty. Pre-incorporation contracts bind the person, not the company (s.51).

Practice Questions

Question 1 of 8

The principle of separate legal personality was established in:

Question 2 of 8

A public company (plc) must have a minimum allotted share capital of:

Question 3 of 8

The articles of association can be amended by:

Question 4 of 8

Under s.214 Insolvency Act 1986 (wrongful trading), a director may be personally liable if:

Question 5 of 8

A person enters into a contract on behalf of a company that has not yet been incorporated. Under s.51 CA 2006:

Question 6 of 8

Under s.39 CA 2006, if a company acts beyond its objects clause (ultra vires), a third party dealing in good faith:

Question 7 of 8

The articles of association constitute a statutory contract under s.33 CA 2006 between:

Question 8 of 8

Which of the following is a consequence of separate legal personality?

Source and Version

Syllabus: ICAEW ACA Certificate Level 2026 · Reviewed: 2026-05-04

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