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UK Company Registration: Essential Steps and New Companies House Rules for Entrepreneurs

AirCounsel Team
27/11/2025
18 min read
UK Company Registration: Essential Steps and New Companies House Rules for Entrepreneurs

Over 1 million people have already verified their identity early ahead of new Companies House rules coming into force from late 2025.1 That should tell you everything about how seriously the UK is tightening company registration and transparency.

If you’re planning uk company registration in 2025–2026, you’re doing it under the most significant Companies House reforms in decades. Identity checks, stricter address rules, and tougher data verification will change how you set up and manage a company from day one.

This guide walks you through the steps to register a UK company now, what’s changing, and how to future‑proof your structure so you’re ready for investors, banks, and regulators.

Table of Contents

Quick Summary

TakeawayExplanation
Companies House rules are tighteningThe Economic Crime and Corporate Transparency reforms mean stricter checks, identity verification, and more accurate public data from 2025–2026.
Plan for identity verificationDirectors, persons with significant control (PSCs), and those filing on your behalf will have to verify their identity with Companies House or an authorised provider.
Registration is fast if preparedWith documents ready, a standard online incorporation of a private limited company can complete in 24 hours; delays usually come from name issues or missing details.
Your registered address and email matterPO boxes will not be acceptable as registered offices, and companies must provide and maintain a working registered email address.
Compliance starts on day oneFrom the moment you incorporate, you take on duties to file annual accounts, Confirmation Statements, and tax registrations—backed by penalties if missed.
Expert support reduces riskUsing a regulated formation service with legal support can help you avoid rejected applications, non‑compliance with new rules, and costly restructuring later.

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What UK Company Registration Actually Involves

When founders talk about uk company registration, they usually mean incorporating a private limited company (Ltd) with Companies House, the UK’s official registrar of companies.2

In practice, that means:

  • Choosing a legal structure (company, sole trader, partnership, LLP)
  • Deciding on a company name that meets the rules
  • Appointing at least 1 director (and optionally a company secretary)
  • Issuing at least 1 share and recording who owns it
  • Providing a registered office address in the UK
  • Filing your incorporation documents and paying the Companies House fee

Once accepted, Companies House issues a Certificate of Incorporation and your company legally exists. But with the new reforms, that’s just the starting point: identity checks, stronger sanctions for inaccurate information, and more public transparency are now baked into the lifecycle of your company.

Why The Companies House Rules Are Changing

The Economic Crime and Corporate Transparency Act is reshaping how UK companies are formed and monitored. The goal is to:

  • Reduce fraud and abuse of UK companies for money laundering
  • Increase the reliability of the information on the public register
  • Make it easier for investors, partners, and the public to trust what they see

For founders, this means:

  • More checks at the point of registration
  • Greater personal accountability for information you file
  • Less tolerance for “placeholder” data (fake addresses or nominee directors)
  • A stronger expectation that you know who really controls your company

If you incorporate with these changes in mind now, you’ll avoid scrambling to fix things later when enforcement tightens.

Step-By-Step: How To Register A UK Company

Step 1: Decide On Your Business Structure

Most scalable startups and SMEs use a private company limited by shares (Ltd), because it:

  • Limits personal liability to the amount you invest
  • Is the standard structure for investors and acquirers
  • Provides flexibility in share classes, options, and exits

Alternatives include:

  • Sole trader: simplest, but no liability protection; you and the business are the same legal person for tax and debt.
  • Partnership/LLP: used for some professional and joint-venture models; more complex and still impacted by parts of the new regime.

If you expect external investors, co‑founders, or a future sale, a limited company is usually the right starting point.

Step 2: Choose A Company Name That Will Be Accepted

Companies House can reject names that:

  • Are identical or too similar to existing company names
  • Contain sensitive words (like “Bank” or “Royal”) without permission
  • Are offensive or misleading about the company’s status

Before you fall in love with a brand, do three checks:

  • Companies House name availability search
  • Basic domain name and social media handle search
  • Potential trademark conflicts (ideally using a UK Trade Mark Search)

Remember: your registered company name can differ from your trading name, but banks, investors, and contracts will use the legal name.

Step 3: Prepare Directors, Shareholders, And PSC Details

You’ll need:

  • At least one director: an individual aged 16+ (not disqualified); companies can be directors too, but there must be at least one real person.
  • Shareholders: can be the same people as directors or different; must be clearly recorded.
  • Persons with Significant Control (PSCs): usually anyone who owns more than 25% of shares/voting rights or otherwise exercises significant influence.

Under the reforms, these people will:

  • Need to provide more reliable identifying information
  • Be required to verify their identity within a set timeframe
  • Face penalties if they fail to verify or if false details are submitted

Getting this right at the start avoids messy cap table cleanups and PSC corrections later.

Step 4: Set Your Registered Office, SIC Code, And Emails

You must provide:

  • Registered office address in the UK:
    • Must be a real, physical address where documents can be served.
    • PO boxes are not acceptable.
    • Many startups use a professional registered office service for privacy and reliability.
  • SIC code (Standard Industrial Classification) describing your main business activity.
  • Registered email address:
    • A new requirement under the reforms.
    • Must be kept up to date and monitored, as Companies House will use it for official communication.

Tip: choose an inbox you control long term (e.g., legal@ or compliance@) rather than a personal founder email.

Step 5: File Your Incorporation Application

To incorporate a private limited company you will typically file:

  • Form IN01 details (online or via service provider), covering:
    • Company name and registered office
    • Directors and (if any) company secretary
    • Share capital and shareholdings
    • PSC information
    • SIC code
  • Articles of Association:
    • You can adopt “Model Articles” or use custom articles.
    • If you’ll bring in investors, custom Articles of Association aligned with a shareholders’ agreement are usually safer.

You can file:

  • Directly with Companies House via their online service.
  • Through an authorised formation agent or legal platform that files as an Authorised Corporate Service Provider (ACSP) under the new regime.

Step 6: Register For Taxes And Open A Business Bank Account

Once you receive your Certificate of Incorporation:

  • Register for Corporation Tax with HMRC (normally within 3 months of starting to trade).
  • Consider:
    • PAYE registration if you’ll have employees or pay directors a salary.
    • VAT registration if your taxable turnover will exceed the threshold or you want voluntary registration.
  • Open a business bank account:
    • Banks will run their own KYC and anti‑money laundering checks.
    • A clean, compliant incorporation file and clear ownership structure make this much easier.

New Rules For 2025–2026: What Founders Must Know

Mandatory Identity Verification

Identity verification is being phased in for:

  • Directors
  • PSCs
  • People who file on behalf of a company (e.g., formation agents, accountants)

Key points:

  • Each relevant individual will need to verify their identity with Companies House directly or through an ACSP.
  • You will not be able to legally act in certain roles (e.g., as a director) if you have not verified your identity within required deadlines.
  • Unverified or suspicious filings are more likely to be queried, delayed, or rejected.

Practically, plan for:

  • Collecting passport/ID details from co‑founders early.
  • Ensuring international founders understand and complete the verification process.
  • Using a single, trusted provider to manage verification and filings where possible.

New Address And Email Requirements

The reforms tighten the rules around your company contact details:

  • Registered office must be an “appropriate address”:
    • Somewhere documents delivered are likely to come to the attention of someone acting for the company.
    • PO boxes will not meet this test.
  • Registered email address:
    • Every company must have one.
    • It must remain valid, and failure to respond to official notices can have consequences.

If you’re a remote‑first or home‑based startup, this makes professional address services more attractive, both for compliance and for privacy.

Changes To Statutory Registers And Public Data

Historically, companies had to keep certain statutory registers (like shareholders and directors) at their registered office or at Companies House.

Under the reforms:

  • More of this information will be centralised and maintained by Companies House.
  • Some internal register requirements will be removed or simplified.
  • The public register will be cleaned up and monitored more actively for inconsistencies.3

For you, that means:

  • Less flexibility to “fix” errors quietly later.
  • More visibility for investors, lenders, and partners into your ownership and control.
  • A stronger need to align internal records (cap table, PSCs) with what’s on the public register at all times.

Tougher Checks And Possible Rejections

Companies House will have:

  • Stronger powers to query, reject, or remove information.
  • The ability to require supporting evidence for suspicious filings.
  • Greater scope to share information with other enforcement bodies.

What this means in practice:

  • Applications using fake or dubious details are more likely to be stopped early.
  • “Shelf companies” or opaque nominee structures will attract more scrutiny.
  • Honest founders can still be delayed if their filings are unclear, incomplete, or inconsistent.

A clean, well‑prepared application is now more valuable than ever.

Costs, Timelines, And Key Decisions

Below is an at‑a‑glance view of the main costs and timings for a standard private limited company (Ltd):

ItemTypical RangeNotes
Companies House incorporation fee (online)£10–£50Varies by service type and speed; fees are periodically updated by Companies House.
Professional formation serviceFrom ~£95+Providers vary; higher‑end services include legal review, custom articles, and drafting of initial resolutions.
Registered office and mail forwarding£100–£300/yearUseful for privacy, especially for home‑based founders.
Ongoing Companies House filings£0–£100/yearConfirmation Statement, changes to officers, share capital updates.
Accounting and tax supportFrom a few hundred £/yearScales with complexity, volume, and whether you use a cloud‑first accountant.
Legal documents (shareholders’ agreements, terms, policies)From a few hundred £Early investment here prevents disputes and compliance failures later.

Typical timeline for a straightforward incorporation:

  • 1–2 days: Collect information, choose name, prepare share structure.
  • 1 day: File incorporation (online).
  • Same day to 48 hours: Companies House decision for standard applications.
  • Up to a few weeks: Bank account approval and any follow‑on tax registrations.

Delays usually come from:

  • Name rejections.
  • Incomplete PSC or director information.
  • Address issues (especially for overseas founders).
  • Identity verification problems under the new rules.

Ongoing Compliance After Registration

Confirmation Statement And Accounts

From day one, you commit to keeping your public data accurate.

You must:

  • File a Confirmation Statement at least once every 12 months confirming:
    • Share capital and shareholder details.
    • PSC information.
    • SIC codes and principal business activities.
  • File annual accounts:
    • Deadlines depend on your accounting reference date and whether it is your first year.
    • Small companies can often file simpler “micro-entity” accounts, but they must still be accurate and compliant.

Failure to file can lead to:

  • Automatic late filing penalties.
  • Strike‑off procedures against the company.
  • Potential criminal liability for directors in serious cases.

Corporation Tax, PAYE, And VAT

Tax compliance runs in parallel with Companies House duties:

  • Corporation Tax:
    • Register with HMRC once you start trading.
    • File a Company Tax Return annually.
  • PAYE:
    • Required if you pay salaries to employees or directors.
    • Includes PAYE income tax and National Insurance contributions.
  • VAT:
    • Compulsory if you exceed the VAT threshold.
    • Optional earlier if it helps with input VAT recovery or customer expectations.

Coordinating accounts and tax from the start is much easier than trying to repair a year of messy transactions later.

Record-Keeping Under The New Regime

Even as more data moves onto the public register, you still need solid internal records, including:

  • Up‑to‑date cap table and share issuances.
  • Board and shareholder resolutions.
  • Contracts with key customers, suppliers, and staff.
  • Data protection documentation if you handle personal data.

Many founders now pair their incorporation with:

Common Mistakes To Avoid Under The New Rules

Founders often stumble on the same issues:

  • Using a home address carelessly:
    • Your registered office appears on the public register.
    • Changing later is possible but adds friction, and historical data can remain visible.
  • Not aligning ownership with reality:
    • “We’ll fix the shares later” is risky when Companies House and investors expect clean records.
    • Under the reforms, inconsistent PSC data is more likely to be challenged.
  • Ignoring identity verification until it’s urgent:
    • Unverified directors or PSCs can cause delays in filings and transactions.
  • Copy‑pasting generic articles and contracts:
    • Standard templates rarely match your real cap table or investor expectations.
    • Misaligned Articles and shareholder agreements cause expensive rewrites later.
  • Treating compliance as a one‑off:
    • Registration is a start, not the finish line.
    • Missed filings or sloppy records can damage credibility just when you’re trying to raise or sign major customers.

Practical Tips For A Smooth, Future-Proof Incorporation

  • Design your cap table early:
    • Agree co‑founder equity, vesting, and any option pool before you file.
  • Think like an investor:
    • Clean ownership, clear governance, and tidy records are due‑diligence basics.
  • Use professional addresses and central inboxes:
    • Protect founder privacy and avoid missing important notices.
  • Prepare ID documents for all key people:
    • Especially if they’re overseas or not used to UK processes.
  • Align documents with your growth plans:
    • If you aim for fundraising, consider bespoke Articles, shareholders’ agreements, and IP assignments from the beginning.
  • Leverage expert support instead of over‑DIY:
    • The new regime penalises shortcuts; support from regulated professionals often costs less than fixing errors.

How AirCounsel Can Help You Register Your UK Company

Entrepreneurs in a meeting with a legal expert discussing UK company registration and compliance steps

AirCounsel is built for founders who want clarity, speed, and predictable costs—not legal confusion.

Our UK‑qualified solicitors can handle your incorporation end‑to‑end, from choosing the right structure and drafting custom Articles to navigating the new Companies House identity checks and PSC rules. With our Entity and Company Formation service, you get a compliant setup and investor‑ready documents without guesswork.

If you want ongoing peace of mind as the 2025–2026 reforms take effect, our All-Access Legal Membership (UK) offers unlimited consultations, priority support, and discounts on all drafting and review work—so every new round, hire, or contract is covered.

Prefer to sense‑check a specific point—like identity verification, PSCs, or address rules—before you incorporate? Use an Online Consultation with a Solicitor to get focused, practical advice in plain English.

Frequently Asked Questions

What documents do I need for UK company registration in 2025?

You’ll typically need:

  • Proposed company name and SIC code
  • Registered office address and a working email address
  • Details of at least one director (and optional secretary)
  • Share capital structure and initial shareholdings
  • PSC information
  • Articles of Association (model or custom)

As the reforms roll out, you’ll also need identification details for directors and PSCs so they can complete identity verification with Companies House or via an authorised provider.

How does the new identity verification process work for directors and PSCs?

Each director, PSC, and relevant filer will have to verify their identity either:

  • Directly with Companies House, through an online identity verification process, or
  • Indirectly via an Authorised Corporate Service Provider (ACSP), such as a regulated formation agent or legal firm.

Once verified, individuals will be linked to their roles on the register. Failure to verify within required deadlines can restrict their ability to act and may lead to criminal or civil penalties. Using a single provider to manage verification and filings can simplify things, especially for multi‑founder or cross‑border teams.

Can I register a UK company if I live outside the UK?

Yes. Many non‑UK residents incorporate UK companies, especially for tech, e‑commerce, and consulting businesses. You will need:

  • A registered office address in the UK (not a PO box)
  • At least one director (who can be non‑UK‑resident)
  • The ability to complete identity verification for directors and PSCs

You should also consider tax residence and substance requirements in both the UK and your home country and get tailored advice if your situation is complex.

What are the ongoing compliance requirements after registration?

At a minimum, you must:

  • File a Confirmation Statement at least annually
  • File annual accounts with Companies House
  • Register for Corporation Tax with HMRC and file a Company Tax Return
  • Operate PAYE and possibly VAT if relevant
  • Keep your director, shareholder, PSC, and address details up to date

Missing filings can lead to fines and, in serious or repeated cases, the company being struck off and directors facing penalties.

Is it better to use model Articles or custom Articles of Association?

Model Articles are fine for a simple, single‑founder company with no immediate plans to raise investment. But once you have co‑founders, investors, or complex share rights, custom Articles are usually safer. They let you:

  • Define different share classes and investor protections
  • Align governance with your shareholders’ agreement
  • Avoid conflicts between your documents and the Companies Act

A service like Custom Articles of Association helps you get this right without over‑engineering.

Do I need a solicitor to register a UK company?

Legally, no—you can register a company yourself directly with Companies House. But with the new verification rules, tougher checks, and higher expectations on transparency, many founders prefer to:

  • Use a regulated formation service to minimise rejections and errors
  • Get bespoke documents (Articles, shareholders’ agreements, terms) aligned with their plans
  • Have an ongoing relationship with legal advisors as they scale

The cost is often small compared with the time, risk, and potential restructuring fees of fixing a poorly set‑up company later.

Footnotes

  1. UK Government: One million people verify identity early ahead of Companies House changes ↩

  2. See the UK Government overview on setting up a business for the main structures and regulators involved. ↩

  3. See the UK Government guidance on changes to company registers for the evolving statutory register rules. ↩

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