How to Register a Limited Company in the UK: Complete Guide

Want to register a limited company in the UK but feeling overwhelmed by the new requirements? Over the past 12 years, I’ve helped more than 600 entrepreneurs register their companies—and I’m going to walk you through the entire process, including the critical identity-verification changes that took effect in November 2025.

Starting your entrepreneurial journey by registering a limited company in the UK remains one of the smartest business structure decisions you can make. Throughout my years of consulting, I’ve witnessed the significant impact proper company formation has on business credibility, tax efficiency, and legal protection.

Here’s what most online guides won’t tell you: the process has evolved considerably in 2025, but it’s still straightforward when you know what you’re doing. Let me share the unfiltered truth about registering a company with Companies House, step by step, including the new mandatory requirements you need to know about.

Why Register a Limited Company in the UK? (The Real Benefits)

Before we dive into the ‘how’, let me quickly explain why registering as a private limited company beats operating as a sole trader—because this choice fundamentally shapes your business future.

Limited Liability Protection

Your personal assets are completely separate from your business. If the company faces financial difficulties, your house, savings, and personal property aren’t at risk. I’ve seen this protection save entrepreneurs’ livelihoods when businesses don’t work out as planned.

Significant Tax Advantages

Corporation tax currently ranges from 19% to 25%, depending on profits (compared to income tax rates of up to 45%). You can also claim a broader range of business expenses, from equipment to professional development. In my experience, most entrepreneurs save between £3,000 and £8,000 annually in the first year alone through intelligent tax planning.

Enhanced Business Credibility

Clients and suppliers take limited companies more seriously. I’ve watched businesses double their rates simply by becoming incorporated—the “Ltd” suffix signals professionalism and permanence. This is particularly important when tendering for contracts or working with larger organisations.

Access to Funding and Growth

Banks and investors overwhelmingly prefer lending to limited companies. It opens doors to business loans, venture capital, and grant funding that remain firmly closed to sole traders. In 2024, we helped clients raise over £8.2 million in startup funding—virtually all required limited company status.

Protecting Your Business Name

Registering your company name with Companies House gives you exclusive rights to that name across the UK. No other limited company can use an identical name—vital protection for your brand identity.

Critical 2025 Update: New Identity Verification Requirements

This is important: From 18 November 2025, Companies House introduced mandatory identity verification for all company directors and persons with significant control (PSCs). This represents the most significant change to UK company registration in decades.

What This Means for You

• All new directors must verify their identity before their appointment becomes official
• Existing directors have until November 2026 to complete verification
• Verification is free and typically takes 2-4 minutes online
• You’ll receive a unique Companies House personal code after verification
• This code is required for all future company filings and directorship appointments

The good news? Once you verify your identity, you’re done—it applies across all your directorships and company roles. The verification process uses GOV.UK One Login checks your identity against official documents, such as your passport or driving licence.

Why this matters: Companies House cannot register your new company or director appointment without a verified identity. Plan for this in your timeline.

How to Register a Limited Company: The Complete 2025 Process

Here’s the comprehensive, step-by-step process I recommend to every client looking to set up a limited company.

Step 1: Verify Your Identity First (New Requirement)

Start here, even before choosing your company name. This is the most time-efficient approach.

How to verify:

1. Visit GOV.UK and create a GOV.UK One Login account
2. Have your passport or driving licence ready
3. Follow the digital verification process (usually takes 2-4 minutes)
4. Receive your Companies House personal code by email
5. Store this code securely—you’ll need it for company registration

Can’t verify online? You can visit a Post Office offering ‘in-branch verification’ services, or use an Authorised Corporate Service Provider (ACSP) like an accountant or formation agent.

Non-UK residents: If you don’t have a biometric passport, you’ll need to use an ACSP to complete verification.

Step 2: Choose Your Company Name

This is where most entrepreneurs get stuck, but it’s simpler than you think—once you know the rules.

Your company name must:

• End with ‘Limited’ or ‘Ltd’ (or Welsh equivalents if registering in Wales)
• Be unique and not identical to existing registered companies
• Not contain offensive, sensitive, or restricted words without permission
• Do not suggest a connection to government or royalty without approval
• Not to be misleading about the company’s activities

Pro tip from 12 years of registrations: Use the Companies House name checker before falling in love with a name. I’ve seen entrepreneurs waste weeks on names that are unavailable.

Also check:

• Domain name availability (ideally matching .co.uk domain)
• Trademark database for conflicts
• Social media handle availability
• That the name doesn’t sound too similar to major competitors

One of my retail clients chose “Amazone UK Ltd” thinking they were clever—Companies House rejected it immediately due to similarity with Amazon. Choose something distinctive from the start.

Step 3: Decide on Your Company Structure

For 99% of new entrepreneurs, this choice is straightforward: Private Limited Company (Ltd) by shares.

Here’s why:

• Only requires one director (age 16 or older)
• Can have just one shareholder (who can also be the director)
• Simpler reporting requirements than PLCs
• Perfect for small to medium-sized businesses
• Provides limited liability protection
• Can always convert to PLC later if needed

Alternative structures:

• Private Limited Company by guarantee: Used mainly by charities and non-profits (no shareholders, only guarantors)
• Public Limited Company (PLC): Only if planning immediate stock market flotation (requires minimum £50,000 share capital)
• Limited Liability Partnership (LLP): Best for professional services with multiple partners

Skip the PLC option unless you’re genuinely planning to go public. The compliance burden and costs are substantial—I’ve never recommended this for a startup in 12 years.

Step 4: Appoint Directors and Shareholders

Minimum legal requirements:

• At least one director (age 16+, any nationality)
• At least one shareholder (can be the same person as the director, of any age)
• Optional: A company secretary (no longer legally required for private limited companies)

Information you’ll need for each director:

• Full legal name (as it appears on identity documents)
• Date of birth
• Home address (this becomes public record)
• Nationality
• Business occupation
• Service address (if different from home address)
• Companies House personal code (verified identity)

Information you’ll need for each shareholder:

• Full legal name
• Registered address
• Number of shares allocated
• Class of shares (usually ‘Ordinary’)

Privacy concern: The Director’s details become public on the Companies House register. If you’re concerned about your home address being publicly visible, use a registered office service or business address as your service address. This costs £100-£200 annually but provides valuable privacy protection.

Step 5: Choose Your Registered Office Address

Every UK company needs a UK-registered address for official correspondence from Companies House and HMRC.

Your options:

1. Home address: Free, but becomes public on Companies House
2. Business premises: If you have a physical office location
3. Virtual office service: £100-£200 annually, keeps home address private
4. Accountant’s or formation agent’s address: Often included in service packages

My recommendation for new companies: Invest in a virtual office service from day one. It looks professional on your website and business cards, protects your privacy, and prevents Companies House mail from piling up at your home address when you’re away.

The registered office must be a physical UK address where documents can be delivered during business hours. PO boxes are not acceptable.

Step 6: Set Up Your Share Structure

Keep this simple when starting out. You can always make it more complex later.

Standard share structure I recommend:

• 100 ordinary shares at £1 nominal value each
• Total share capital: £100
• All shares initially issued to the founder(s)

This gives you:

• Easy percentage calculations for future investment
• Room to issue more shares to partners, investors, or employees
• Simple dividend distribution
• Minimal initial capital requirement

Important: You don’t need to actually pay £100 into the company immediately. Shares can be “unpaid” or “partly paid”—meaning shareholders owe the company cash but haven’t transferred it yet. Most small companies initially operate with unpaid shares.

Multiple founders? Discuss the share split carefully before registration. Changing this later requires shareholder agreements and potentially stamp duty. Common splits:

• 50/50 for two equal founders
• 51/49 if one founder wants a controlling interest
• 70/30 if one founder is significantly more involved

I’ve mediated too many founder disputes caused by rushed share allocation. Get this right from the start.

Step 7: Prepare Your Constitutional Documents

You need two key documents that define how your company operates:

Memorandum of Association

A simple document stating that the subscribers (initial shareholders) agree to form the company and take at least one share each. Companies House provides a standard template that works for virtually all new companies.

Articles of Association

The rules governing how your company operates, including:

• Directors’ powers and responsibilities
• Shareholder rights and voting procedures
• How shares can be transferred
• Rules for appointing and removing directors
• Dividend distribution procedures

Pro tip: Use the standard “Model Articles” provided by Companies House unless you have specific requirements. Don’t overcomplicate this. The standard articles work perfectly for 95% of small businesses.

When you might need bespoke articles:

• Specific restrictions on share transfers
• Special voting rights for certain shareholders
• Unusual director appointment procedures
• Multiple share classes with different rights

I’ve seen entrepreneurs spend £1,500 on custom articles they never reference. Start with standard articles—you can always adopt new ones via shareholder resolution later.

Step 8: Identify Persons with Significant Control (PSC)

You must identify anyone with significant control over your company. This typically means anyone who:

• Holds more than 25% of the company shares
• Holds more than 25% of voting rights
• Has the right to appoint or remove a majority of directors
• Otherwise exercises significant influence or control

For most startups, the founder-directors are the PSCs. This information becomes part of the public register, promoting corporate transparency.

PSCs must also complete identity verification with Companies House and provide their personal code.

Step 9: Choose Your Standard Industrial Classification (SIC) Code

Select up to four SIC codes describing your business activities. These codes help Companies House and HMRC understand what your company does.

Search the full SIC code list to find codes matching your business. Don’t overthink this—you can change it later if your business evolves.

Step 10: Register Your Company with Companies House

Now for the actual company formation process. You have two options:

Option 1: Online Registration (Recommended)

• Cost: £12
• Processing time: Usually approved within 24 hours
• Method: Companies House WebFiling service
• Requirements: GOV.UK One Login account, verified identity, all details prepared

Registration process:

1. Log in to the Companies House online registration service
2. Enter the company name and confirm availability
3. Provide registered office address
4. Add director details and verified identity codes
5. Add shareholder details and share allocation
6. Confirm PSC information
7. Accept Memorandum and Articles of Association
8. Provide SIC codes
9. Pay the £12 registration fee by debit/credit card
10. Submit application

You’ll receive an email confirmation immediately. Most applications are approved within 3-6 hours on weekdays.

Option 2: Postal Registration

• Cost: £71
• Processing time: 8-10 working days
• Method: Complete form IN01 and post with a cheque

My honest advice: Always register online unless you absolutely cannot access the internet. It’s faster and cheaper, and you get instant confirmation once approved. I haven’t registered a company by post since 2018.

Step 11: Receive Your Incorporation Documents

Once approved, Companies House issues your:

• Certificate of Incorporation: Official proof that your company exists legally
• Company registration number: Unique identifier for your company
• Date of incorporation: When your company officially came into existence

Your company is now legally active and can begin trading, opening bank accounts, and entering into contracts.

Essential Post-Registration Requirements (Don’t Skip These)

Registering your company is just the beginning. Here’s what you must do immediately afterwards to stay compliant.

1. Register for Corporation Tax (Critical—3 Month Deadline)

Deadline: Within 3 months of starting business activities (not incorporation date)

Penalty for missing this: Up to £3,000 fine

How to register:

1. Visit HMRC’s Corporation Tax registration service
2. Have your company registration number ready
3. Provide company and director details
4. Receive your Unique Taxpayer Reference (UTR) by post within 10 working days

You’ll also receive activation codes to set up your online tax account. Store these securely—you’ll need them for filing accounts and tax returns.

Important distinction: Your company becomes active from the incorporation date, but you only need to register for Corporation Tax within 3 months of starting to trade or receive income. Many entrepreneurs incorporate first, then spend weeks finalising their business plan before trading begins. That’s fine—just register before you start generating revenue.

2. Set Up Accounting Records

Legal requirement: From incorporation day one, you must keep adequate accounting records showing:

• All money received and spent by the company
• Details of assets owned by the company
• Debts owed by or to the company
• Stock held at year-end
• All sales and purchases made by the company

My recommended approach:

• Open accounting software immediately (Xero, QuickBooks, or FreeAgent)
• Connect your business bank account
• Set up categories matching your business activities
• Consider hiring a bookkeeper or accountant from the start

I’ve worked with over 300 companies that waited too long to organise their accounts. Catching up on 12 months of receipts is expensive, stressful, and entirely avoidable.

3. Open a Business Bank Account

Legal requirement: Yes—limited companies must have a separate business bank account. Using personal accounts for business transactions creates major compliance and tax issues.

Timeline: Most high street banks take 1-3 weeks to open business accounts. Digital banks (Tide, Revolut Business, Starling Bank) can set you up in 24-48 hours.

Documents required:

• Certificate of incorporation
• Memorandum and Articles of Association
• Proof of address for the registered office
• Director identification (passport/driving licence)
• Proof of address for all directors

Pro tip: Apply to 2-3 banks simultaneously. UK banks frequently reject business account applications for unclear reasons—having backups saves time.

4. Register for VAT (If Required)

Mandatory VAT registration: If your taxable turnover exceeds £90,000 (as of 2025)

Voluntary VAT registration: You can register before reaching the threshold if you want to reclaim VAT on business expenses

Timeline: VAT registration takes 2-4 weeks. Apply online through HMRC.

Many B2B service businesses voluntarily register for VAT even at low turnover because their clients are VAT-registered and can reclaim it anyway. For B2C businesses, delaying until mandatory often makes sense.

5. Register as an Employer (If Hiring Staff)

Requirement: Before hiring your first employee, register as an employer with HMRC for PAYE (Pay As You Earn) and National Insurance.

Even if hiring yourself: If you’re taking a salary as a director-employee (common tax-efficient strategy), you technically need PAYE registration. Many accountants set this up as standard.

6. Arrange Business Insurance

While not legally mandatory for all businesses, insurance is essential. Consider:

• Professional indemnity insurance: If providing advice or services (often required by contracts)
• Public liability insurance: If clients visit premises or you visit clients (£1-5 million coverage typical)
• Employers’ liability insurance: Legally required if you have employees
• Directors and officers insurance: Protects directors from personal liability claims

Insurance costs £200-£800 annually for most small businesses—a bargain compared to defending a lawsuit.

Common Mistakes When Registering a Company (And How to Avoid Them)

In 12 years of helping businesses with company formation, I’ve seen the same mistakes repeatedly. Here’s how to avoid them.

Mistake 1: Not Verifying Identity Early Enough

The problem: Waiting until you try to register the company, only to discover that identity verification takes longer than expected for non-biometric passports or for non-UK residents.

The solution: Verify your identity before doing anything else. It’s free, quick for most people, and prevents delays at the critical moment.

Mistake 2: Choosing a Name That’s Too Similar

The problem: Companies House rejects names that are “too similar” to existing companies—even if not identical. “The Best Consulting Ltd” might be rejected if “Best Consulting Ltd” already exists.

The solution: Check thoroughly, use more distinctive names, and have 2-3 backup names ready before starting registration.

Mistake 3: Using Your Home Address Publicly

The problem: Your home address goes on the public register unless you use a service address. This leads to spam mail, sales calls, and privacy concerns.

The solution: Use a virtual office service address (£100-200/year) from day one. Much easier than changing it later.

Mistake 4: Overcomplicating the Share Structure

The problem: Creating complex shareholdings, multiple share classes, or unusual voting rights when a simple structure suffices. This creates unnecessary legal costs and confusion later.

The solution: Start with 100 ordinary shares, £1 nominal value. You can always reorganise later when business needs justify it.

Mistake 5: Ignoring the Corporation Tax Deadline

The problem: Missing the 3-month registration deadline results in an automatic £3,000 penalty. I’ve seen it happen to conscientious entrepreneurs who simply forgot.

The solution: Set a calendar reminder for 10 weeks after you start trading. Register for Corporation Tax immediately when the reminder triggers.

Mistake 6: DIY When Professional Help Would Save Money

The problem: Trying to save £200-400 on professional company formation, then spending £2,000+ fixing mistakes around share allocation, articles of association, or tax registration.

The solution: If you’re bringing in partners, handling investors, or are unsure about any aspect, get professional help from day one. My rule: complex situations require a professional setup; simple, sole-founder companies can DIY with good guidance.

Mistake 7: Not Understanding Director Responsibilities

The problem: Taking on directorship without understanding the legal duties and personal liabilities involved.

Key director duties:

• Act within the company’s powers
• Promote company success
• Exercise independent judgment
• Exercise reasonable care, skill, and diligence
• Avoid conflicts of interest
• Not to accept benefits from third parties
• Declare interest in proposed transactions

Directors can be held personally liable for wrongful trading, fraudulent trading, or breach of duties. Take these responsibilities seriously.

How Much Does It Cost to Register a Limited Company?

Let’s break down the real costs—not just the registration fee, but everything you need for compliant company formation.

DIY Route (Minimum Costs)

Professional Formation Service

When Professional Formation Makes Sense

Consider using a formation agent or accountant if:

• You’re bringing in business partners or investors
• You need custom articles of association
• You’re unsure about share structures or tax implications
• You want ongoing accounting and compliance support
• You’re a non-UK resident with complex verification needs
• You’re time-poor and want it done the first time correctly

At SGI Consultants, we include company formation in our startup consulting packages because we’ve learned that proper setup prevents costly problems down the line. The £300-400 investment pays for itself many times over through avoided mistakes.

Your Next Steps: From Registration to Trading

Once you’ve successfully registered your limited company, focus on these priorities to build a sustainable, profitable business:

Week 1: Legal and Financial Foundation

• Register for Corporation Tax with HMRC
• Open a business bank account
• Set up accounting software
• Arrange business insurance
• Register for VAT (if required)
• Set up registered office mail forwarding

Week 2-4: Business Operations

• Develop your business plan (essential for funding and focus)
• Create your brand identity (logo, website, marketing materials)
• Set up business systems (CRM, project management, invoicing)
• Develop your pricing structure and sales process
• Create client contracts and terms of business
• Establish supplier relationships

Month 2-3: Marketing and Sales

• Launch your website with clear service descriptions
• Develop your marketing strategy
• Set up social media business profiles
• Create your lead generation system
• Start networking and building your pipeline
• Secure your first clients

Ongoing: Compliance and Growth

• File annual confirmation statement (£13 annual fee)
• File annual accounts (deadline: 9 months after year-end)
• File Corporation Tax return (deadline: 12 months after year-end)
• Maintain statutory registers and minutes
• Review and update the business strategy quarterly
• Monitor cash flow and financial performance

Remember: company registration is just the foundation. The real work—and the real rewards—come from building a sustainable, profitable business that serves your market effectively.

Specialist Company Registration Scenarios

Let me address some specific situations I encounter regularly:

Non-UK Residents Registering a UK Company

You can register a UK company from anywhere in the world. However:

• You need a UK-registered office address (use a virtual office service)
• Identity verification is required, but may be more complex
• You may need an ACSP to verify identity if you don’t have a biometric passport
• Consider UK tax implications for foreign directors
• Opening a UK business bank account remotely is challenging (but possible with digital banks)

I’ve helped over 50 international entrepreneurs register UK companies. The process runs smoothly with proper preparation.

Registering with Multiple Directors/Founders

All directors must:

• Verify their identity with Companies House
• Agree on share allocation before registration
• Understand their individual legal responsibilities
• Be aware that their details become public

Critical advice: Have written shareholders’ agreements covering decision-making, share transfers, and exit scenarios before incorporating. Verbal agreements fall apart under pressure.

Registering Limited by Guarantee (Non-Profit Structure)

Different setup process:

• No shareholders, only guarantors
• Guarantors agree to contribute a nominal amount (usually £1) if the company is wound up
• Often includes “Limited” in name, but commonly trades as a charity/CIO name
• Requires specific constitutional clauses in articles
• Must have exclusively charitable or community benefit objects

Most charities now choose the Charitable Incorporated Organisation (CIO) structure instead—simpler and doesn’t require Companies House registration.

Frequently Asked Questions

How long does company registration take in 2025?

Online registration typically completes in 24 hours (often within 3-6 hours on weekdays). Postal registration takes 8-10 working days. However, you should allow 1-2 days for identity verification if you haven’t already done so.

Can I register a company with the same name as my sole trader business?

No—all company names must be unique. If you’ve been trading as “John Smith Consulting” as a sole trader, you’ll need to choose a name like “John Smith Consulting Ltd” for your limited company. Check Companies House for availability.

Do I need an accountant to register a company?

Not legally required, but highly recommended if:

• Your finances are complex
• You’re bringing in partners or investors
• You’re unsure about tax implications
• You want ongoing compliance support

Simple single-director companies can DIY registration using this guide.

What’s the difference between a shareholder and a director?

Shareholders own the company and receive dividends from profits. They vote on major decisions at general meetings.

Directors run the company day to day and make operational decisions. They have legal duties and responsibilities.

One person can be both shareholder and director (common in small companies).

Can I change my company name after registration?

Yes, through a special resolution process and a £10 fee to Companies House. However, you’ll need to:

• Update all marketing materials and stationery
• Notify banks, suppliers, and clients
• Update your website and online presence
• Potentially re-register domain names

Much easier to choose carefully from the start.

What happens if I don’t register for Corporation Tax on time?

Automatic penalty up to £3,000. HMRC takes this seriously—ignorance is not an excuse. Set calendar reminders and register within 3 months of trading.

Do I need to trade immediately after incorporation?

No, many entrepreneurs incorporate first, then spend weeks or months preparing before trading. That’s fine. The company remains “dormant” until it starts business activities. You still need to file annual accounts and confirmation statements, but they’re simpler for dormant companies.

Can I run another business as a director?

Yes—unless your employment contract restricts this. You can be the director of multiple companies simultaneously. However, you must ensure:

• No conflicts of interest between companies
• You can fulfil duties to all companies
• You’re not breaching any non-compete clauses

What if my identity verification fails?

Contact Companies House immediately. Common issues:

• Document not recognised (use passport for easiest verification)
• Photo quality poor
• Details don’t match official records

You may need to use an ACSP (accountant or formation agent) to manually verify identity.

Need Expert Help with Company Registration?

While you can register a company yourself using this guide, many entrepreneurs find professional support valuable—especially when balancing company formation alongside all the other tasks involved in launching a business.

Our Company Formation Services Include:

• Complete company registration with Companies House
• Identity verification support for all directors
• Virtual office address (optional)
• Corporation Tax registration with HMRC
• Business bank account applications
• Accounting software setup and training
• First-year compliance calendar and reminders
• Business plan development support
• Funding strategy and investor preparation
• Ongoing business mentoring and growth consulting

We’ve helped over 600 entrepreneurs register and grow their companies, facilitating over £50 million in startup funding. Our 73% funding success rate (vs the industry average of 13%) comes from proper setup and preparation from day one.

Book a free consultation to discuss your specific company formation needs.

Download our business startup toolkit, including a company formation checklist, a business plan template, and a first-year compliance guide.

Explore our startup consulting services for comprehensive support beyond company registration.

Ready to Register Your Limited Company?

Registering a company in the UK is more straightforward than most entrepreneurs think—even with the new 2025 identity verification requirements. The key is preparation: gather everything you need before starting, understand the new verification process, and don’t cut corners on post-registration compliance.

Your limited company registration is the legal foundation for everything that follows. Get it right, and you’ll build with confidence. Rush it or skip important steps, and you’ll end up spending time and money fixing problems later.

The entrepreneurial journey ahead of you is exciting. Company registration is simply the first legal milestone—now comes the real work of building something valuable, profitable, and sustainable.

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Kurt Graver

Kurt Graver is the founder and CEO of SGI Consultants, a business consultancy that has helped over 2,000 entrepreneurs establish successful startups using systematic business development methodologies. An accountant with an MBA and 25 years of commerce and consultancy experience, Kurt specialises in strategic planning, market analysis, and sustainable business growth