How to register a UK limited company in 2026

Should you register a UK limited company?

You do not need a limited company on day one of having an idea. Many founders test demand first. However, once you plan to trade, take payments, sign contracts, or work with partners, registering a UK LTD (private limited company) provides financial protection and credibility. A limited company is a separate legal entity — your personal assets are generally protected if the business faces liabilities.

What you need before registering

• A unique company name (check availability on Companies House)
• At least one director (you can be the sole director)
• A registered office address in the UK
• Details of shareholders and share allocation
• A Standard Industrial Classification (SIC) code for your activity
• Memorandum and articles of association

Step-by-step: registering a UK limited company

1. Choose and check your company name. Search the Companies House register to ensure your name is available and complies with naming rules.
2. Decide on directors and shareholders. Most solo founders appoint themselves as director and sole shareholder with ordinary shares.
3. Prepare your registered office address. This must be a physical UK address where official mail can be delivered.
4. File incorporation with Companies House. You can register online directly or use a formation agent. Online registration typically costs £50 with Companies House (fees may change).
5. Set up business banking. Open a business bank account to keep personal and company finances separate — essential for accounting and tax.
6. Register for tax if required. Depending on turnover, you may need to register for Corporation Tax, VAT, or PAYE. HMRC guidance applies once you start trading.
7. Secure your digital presence. Register domain names, set up professional email, and consider insurance relevant to your activity.

How much does UK company setup cost?

Companies House online incorporation starts from £50. Formation agents charge more for bundled services. If you want expert guidance on the full setup — banking, domains, insurance, and strategy — Launch My Idea by Consult14 offers a fixed-fee Basic Company Setup package for £500, designed for founders who want help without enterprise consultancy prices.

Common mistakes first-time founders make

• Registering too early before validating the idea, or too late once already trading informally
• Mixing personal and business finances from day one
• Skipping domain registration and letting someone else claim your brand name
• Ignoring insurance that applies to their industry
• Underestimating ongoing filing obligations (confirmation statements, accounts)

Get expert help for under £500

If government forms and setup decisions feel overwhelming, Consult14 handles the essentials in a single fixed-fee package. See our UK company setup service, read the FAQ, or contact us to discuss your idea.