How to Complete the IN01 Form for Company Incorporation

The IN01 form is the official application used to incorporate a company in the UK. It is submitted to the registrar of companies and forms the legal basis for creating a new limited company. The form collects essential information about the proposed company, including its name, registered office, directors, share structure, and constitutional arrangements.

The legal framework for incorporation is primarily governed by the Companies Act 2006, with administrative oversight provided by Companies House, the UK's central company register. Errors or omissions in the IN01 form commonly result in rejection, delaying incorporation and potentially affecting trading plans.

This article explains each section of the IN01 form, common compliance issues, and the legal implications of the information submitted.

Legal Context of the IN01 Form

The IN01 form is used to register:

• Private limited companies (Ltd)
• Public limited companies (plc)
• Companies limited by guarantee

Submission creates a separate legal entity with its own legal personality, capable of entering contracts, owning assets, and incurring liabilities.

The registration authority is:

Companies House

Companies House is responsible for ensuring that incorporation applications comply with statutory requirements under the Companies Act 2006.

Before Completing the IN01 Form

Before starting the application, the following preparatory steps are typically required:

• Selecting a compliant company name (checked against existing names and sensitive word restrictions)
• Deciding company structure (share capital or guarantee)
• Preparing constitutional documents (usually model articles or bespoke articles)
• Appointing at least one director (for companies limited by shares)
• Establishing a registered office address in the UK

Failure to prepare these correctly often results in rejection of the application.

Structure of the IN01 Form

The IN01 form is divided into multiple sections. Each section has legal significance and must be completed accurately.

Section A: Company Details

Company Name

The proposed name must:

• End with “Limited” or “Ltd” (or “plc” for public companies)
• Not be identical or too similar to an existing company
• Avoid restricted or sensitive words without approval
• Not be misleading or imply official status

Companies House may reject names that conflict with existing registered entities or regulatory restrictions.

Registered Office Address

The registered office must:

• Be a physical address in the UK
• Be capable of receiving official correspondence
• Be located in the same jurisdiction as incorporation (England and Wales, Scotland, or Northern Ireland)

This address becomes part of the public record.

Jurisdiction of Incorporation

The form requires confirmation of whether the company is being incorporated in:

• England and Wales
• Scotland
• Northern Ireland

This determines applicable company law administration.

Section B: Company Type and Articles of Association

Applicants must select:

• Model articles (standard template)
• Model articles with amendments
• Bespoke articles

Only one option is permitted. Selecting multiple options is a common reason for rejection.

Articles of association regulate:

• Director powers
• Shareholder rights
• Decision-making processes

Section C: Statement of Capital (Companies Limited by Shares)

This section sets out the company's share structure, including:

• Number of shares issued
• Share class (e.g. ordinary shares)
• Nominal value per share
• Total issued share capital

Each share class must include “prescribed particulars” describing rights such as:

• Voting rights
• Dividend entitlement
• Rights on winding up

Errors in this section are among the most common causes of rejection due to incomplete totals or inconsistent share allocations.

Section D: Subscribers (Founders)

Subscribers are the original shareholders or members who form the company.

This section requires:

• Full names
• Addresses
• Number of shares taken (if applicable)
• Authentication signatures

Subscribers confirm agreement to form the company and adopt its constitutional documents.

Section E: Directors and Company Secretary

Directors

At least one director is required for most private companies limited by shares. Details include:

• Full name
• Date of birth
• Nationality
• Occupation
• Service address (public)
• Residential address (not publicly displayed)

Directors must consent to appointment and meet legal eligibility requirements.

Company Secretary (Optional)

Private limited companies are not required to appoint a company secretary, but public companies must have one.

Section F: People with Significant Control (PSC)

The IN01 form requires disclosure of individuals or entities with significant control over the company.

A PSC typically holds:

• More than 25% of shares or voting rights
• The right to appoint or remove directors
• Significant influence or control

PSC information forms part of the public register and is used for transparency and anti-money laundering compliance.

Section G: Statement of Compliance

This section confirms that:

• All legal requirements under the Companies Act 2006 have been met
• The information provided is accurate
• The application is properly authorised

False statements may result in legal consequences, including criminal liability.

Common Legal and Administrative Errors

Frequent reasons for IN01 rejection include:

• Missing memorandum of association
• Invalid company name ending
• Incorrect share capital totals
• Multiple selections for articles of association
• Incomplete PSC information
• Missing prescribed share rights

Guidance published by Companies House highlights that errors in capital structure and articles are among the most common issues leading to rejection .

Timeframes and Processing

Processing times vary depending on submission method:

• Online incorporation: typically faster approval
• Paper IN01 submission: longer processing and higher risk of errors

Where errors are identified, the application is returned for correction and resubmission.

Legal Risks of Incorrect Submission

Errors or omissions in the IN01 form can lead to:

• Incorporation delays
• Rejection of application
• Incorrect company records on the public register
• Potential disputes over share ownership
• Compliance issues with banks, lenders, and regulators

In serious cases, false or misleading information may result in enforcement action under company law.

Practical Considerations

To reduce risk during incorporation:

• Cross-check company name availability before submission
• Ensure share structure is consistent across all sections
• Verify director and PSC information is complete and accurate
• Confirm articles of association are correctly selected
• Ensure all mandatory signatures and declarations are included

Common Questions from our Readers

Is the IN01 form still required?

Yes, it is required for paper-based incorporation and remains relevant for certain company structures and specific filings.

Can one person complete the IN01 form?

Yes, but all subscribers and directors must provide consent and required personal information.

What happens after submission?

If accepted, the company is registered and issued with a company number. If rejected, corrections must be made and the form resubmitted.

Is professional assistance required?

It is not legally required, but it is commonly used where share structures are complex or where legal risk needs to be minimised.

Key Takeaways

The IN01 form is the formal legal application used to incorporate a company in the UK. It requires accurate completion of company details, share structure, directors, PSC information, and constitutional arrangements. Errors frequently result in rejection or delays, making careful preparation essential. Once successfully processed by Companies House, the company becomes a separate legal entity under the Companies Act 2006.