Introduction
Registering a UK company involves far more than choosing a name and clicking submit. You need a correctly completed application, constitutional documents that set the rules of governance, accurate ownership records, and proof that Companies House has approved the registration.
Get any of this wrong and problems surface quickly. Banks won't open an account without a certificate of incorporation. Investors query mismatched shareholder details. Companies House rejects applications with incorrect People with Significant Control (PSC) information.
Accurate paperwork matters at every stage: incorporating the business, opening a bank account, proving ownership, appointing directors, and meeting ongoing Companies House obligations.
This guide splits the paperwork into three groups: documents you submit to Companies House, documents issued once incorporation succeeds, and records you must create or maintain afterwards to stay compliant.
Key Takeaways
- Private companies limited by shares need an incorporation application, memorandum, articles, and director, shareholder, capital, office, and PSC details.
- Companies House issues the certificate of incorporation, which proves the company legally exists.
- Required filings differ from recommended extras such as a shareholders' agreement and statutory registers.
- Overseas founders must confirm identity, address, and structure rules before filing.
What Are UK Company Formation Documents and Why Do They Matter?
Company formation documents are the applications, constitutional records, certificates, and ownership information used to create and evidence a company registered in the UK. Together, they form the legal paper trail that proves a company exists and defines how it operates.
"Formation" is the legal process of incorporating a business as a company, creating a separate legal entity distinct from its members. The exact rules depend on the structure chosen and the applicable Companies Act 2006 provisions.
Sloppy paperwork creates real problems:
- Rejected applications when names, addresses, or PSC (Persons with Significant Control) details don't match supporting evidence.
- Incorrect ownership records that complicate future share transfers or investment rounds.
- Banking delays, since most banks require a clean certificate of incorporation and consistent director information.
- Compliance headaches later, when confirmation statements or accounts reference outdated details.
Types of UK Entities and Document Differences
Document requirements also change with the entity you register. Here's a quick comparison:
| Entity type | Registration form | Key distinction |
|---|---|---|
| Private company limited by shares | IN01 (or online equivalent) | Shareholders hold shares; profits distributed as dividends |
| Company limited by guarantee | IN01, with guarantee particulars | No share capital; guarantors pledge a fixed contribution |
| Public limited company (PLC) | IN01, with additional public-company rules | Can offer shares to the public; higher capital requirements |
| Limited liability partnership (LLP) | LL IN01 | Partnership-style entity with at least two designated members |
| UK establishment of an overseas company | OS IN01 | Registers a branch of an existing foreign company, not a new UK entity |
This article focuses on the standard private company limited by shares, since that's the structure most founders mean when they ask about "UK company formation documents." Always verify the current form and requirements for your specific structure before filing.
Essential Documents for Forming a UK Private Limited Company
These documents fall into three stages: information you submit at incorporation, documents Companies House issues after approval, and ownership details that form the public record.
Application to Register a Company
The IN01 form, or its online equivalent, is the core incorporation application. It captures:
- Proposed company name and registered office address
- Director and secretary details (if applicable)
- Shareholder information and share capital
- Choice of articles (model or bespoke)
- Statement of compliance
- PSC information
The exact form and information required can vary by company type, jurisdiction within the UK, and filing method. According to Companies House's published fee schedule, online incorporation currently costs £100, while paper filing costs £124.
Online applications are usually processed faster than postal ones, though timings aren't guaranteed. Check current Companies House guidance before relying on a specific turnaround.
Some founders file directly; others use an authorised formation agent. Either route feeds the same information into the same public register.
Memorandum of Association
The memorandum records the subscribers' agreement to form the company and become its initial members. For a company limited by shares, each subscriber agrees to take at least one share.
This differs from the articles of association, which govern how the company runs day to day. The memorandum is a one-off historical statement, not an ongoing rulebook.
Electronic incorporation generates the memorandum automatically as part of registration. Paper applications typically need a signed memorandum from the subscribers. Verify the current Companies House process before assuming either route applies to your filing.
Articles of Association
The articles are the company's constitutional rulebook. They cover:
- How directors make decisions
- Shareholder rights and meetings
- Share transfer procedures
- Appointment or removal of directors
Model articles, set out under the Companies (Model Articles) Regulations 2008, suit straightforward companies with one or two founders and simple share structures. Bespoke articles make more sense when you have multiple shareholders, investor arrangements, different share classes, or unusual governance needs.
Having more than one share class doesn't automatically require bespoke articles; model articles do allow different classes. Specific class rights, investor consent requirements, or transfer restrictions often warrant tailored drafting.
Certificate of Incorporation
Once Companies House approves the application, it issues a certificate confirming the registered company name, company number, and date of incorporation.
Under Section 15 of the Companies Act 2006, this certificate is conclusive evidence that the company has been duly registered. It's proof of existence, not a substitute for the application, memorandum, articles, ownership records, or ongoing filings you still need to keep.
Company and Ownership Information
Accurate registered office details, director information, shareholder details, share capital, and PSC information all become part of the public Companies House record. Mistakes here follow the company for years.
A PSC typically holds more than 25% of shares or voting rights, or can appoint or remove a majority of directors, according to Companies House's PSC guidance.
Before submitting, check:
- Spelling of names matches identity documents exactly
- Dates of birth and nationality are correct
- Service addresses (not residential addresses) are used where public disclosure isn't required
- Share allocations add up and match the statement of capital
Additional Documents and Records to Prepare After Formation
Incorporation isn't the finish line. Several documents still need to be created or maintained once the company exists.
Share Certificates and Statement of Capital
The statement of capital, filed at incorporation, records aggregate share numbers, nominal value, and class rights. Share certificates are different: the company must have these completed and ready for delivery within two months of allotment.
Certificates aren't automatically filed with Companies House. They're a record the company retains and issues to shareholders directly.
Shareholders' Agreement
A shareholders' agreement isn't a standard Companies House formation document. Instead, it's a private contract covering:
- Decision-making thresholds
- Share transfer restrictions
- Dividend policy
- Funding and exit arrangements
- Dispute resolution
Consider one whenever there's more than one shareholder, external investment, multiple share classes, or planned exit provisions. Bespoke terms should go through a solicitor, not a template.
Statutory Registers and Company Records
UK companies must still maintain a register of members, kept at the registered office or a notified single alternative inspection location. Registers of directors, secretaries, and PSCs previously had to be kept locally too, but that requirement has changed, so confirm current record-keeping rules before assuming an old checklist still applies.
Resolutions and board minutes should also be retained internally. These aren't filed publicly but need to be accessible if Companies House, HMRC, or an auditor asks for them.
Documents for Tax, Banking, and Operational Compliance
Depending on your activities, you may also need:
- Corporation Tax registration with HMRC and a Unique Taxpayer Reference
- VAT registration if turnover crosses the current threshold
- PAYE registration before your first payday, if employing staff
- Business bank account documentation, requested separately by your chosen bank
- Sector licences, where relevant
None of these are automatically required for every company at formation. They depend on what the business actually does.
How to Choose and Check the Right Document Set
The right document set depends on your structure, number of founders, ownership arrangements, and whether founders are based in or outside the UK.
Confirm the Company Structure and Ownership
Decide between a private company limited by shares, a company limited by guarantee, an LLP, a public company, or a UK establishment of an overseas company before touching any forms. Then identify every shareholder, director, PSC, share class, and voting arrangement in advance, not after you've started the application.
Decide Whether Model or Bespoke Articles Are Appropriate
Model articles work fine for a single founder or a simple two-person company. Bespoke articles, or a supporting shareholders' agreement, become more appropriate with multiple shareholders, investor rights, reserved matters, or complex transfer restrictions.
Custom constitutional documents should always be reviewed by a qualified solicitor. Poorly drafted provisions have a way of surfacing years later, usually during a funding round or a dispute, when they're expensive to fix.
Check Overseas Founder and Identity Requirements
Non-UK founders face a few extra planning points:
- Acceptable identity evidence for directors and PSCs
- Service address requirements (a UK registered office is mandatory, even if directors live abroad)
- Director eligibility rules, which don't require UK residence
- Banking and tax onboarding steps, which vary by provider
Companies House has introduced mandatory identity verification for directors and PSCs, with role-specific transition arrangements. Always check current guidance rather than relying on fixed timelines, since these rules have shifted recently.
Review, Store, and Retrieve the Completed Documents
Before filing, check every field against supporting identity and address documents. After incorporation:
- Save secure digital copies of everything filed
- Keep paper records where useful for board or bank purposes
- Ensure directors and advisers can access company records without delay
Lost documents can often be retrieved through the company's Companies House filing history, or ordered as certified copies for a fee. Charges and processing times change periodically, so confirm current figures before assuming a specific cost or turnaround.
When Professional Support Is Worthwhile
Professional help earns its cost when you're dealing with overseas founders, multiple shareholders, complex share structures, regulated activities, or a need for coordinated tax, accounting, and compliance support across borders.
VJM Global works with businesses forming UK companies, including Private Limited Company and LLP structures, alongside HMRC Corporation Tax registration, PAYE setup, and ongoing compliance filings. Its client base includes UK-domiciled businesses and founders entering the UK from overseas, though it operates without a physical UK office. For founders handling formation paperwork alongside accounting or tax obligations, coordinated support keeps filings, registrations, and records aligned from day one.
Final Checklist Before You File
Run through this before submitting anything:
- Confirm the company structure matches your plans; a UK company is not structured like a US LLC
- Confirm the company name, registered office, and director details are consistent across every form
- Verify shareholders, share capital, and PSC information are accurate and complete
- Choose articles (model or bespoke) that match your governance needs, not only the default
- Set a storage plan for the certificate, application, memorandum, articles, and ownership records
- Schedule post-formation obligations: tax registrations, confirmation statements, and annual accounts
Conclusion
UK company formation documents create the company's legal identity, define how it's governed, evidence its incorporation, and record who owns it. The certificate of incorporation matters, but it is only one piece of the set you must keep accurate and up to date:
- Incorporation application and certificate
- Memorandum and articles of association
- Ownership records and statutory registers
Get the structure right and review each filing before you submit it—that prevents most registration and compliance issues. When the structure or requirements get complex, especially for overseas founders, VJM Global can support UK company formation, accounting, and ongoing compliance.
Frequently Asked Questions
What documents are required to register a company in the UK?
A typical private company limited by shares needs the incorporation application, memorandum and articles of association, and accurate director, shareholder, registered office, share capital, and PSC information.
Does the UK have LLCs?
The UK doesn't generally use the US LLC structure. Founders typically choose a private company limited by shares, an LLP, or another UK-specific structure depending on their goals.
What is the certificate of incorporation for a UK company?
It's issued by Companies House once incorporation succeeds. It normally confirms the company name, company number, and date of incorporation.
What does company formation mean?
Formation is the legal process of registering a business with Companies House, creating a recognised legal entity separate from its owners.
Do I need a shareholders' agreement when forming a UK company?
It's not a standard mandatory Companies House document, but it's valuable whenever there's more than one shareholder or a complex ownership arrangement.
Where can I get replacement copies of my UK company formation documents?
Copies are often available through the company's Companies House filing history, a formation agent's portal, or Companies House's document-ordering service, subject to current fees and procedures.
