How to Register a UK Company in 2026 (A Beginner's Guide)
If you've never registered a company before, the whole process can sound more complicated than it actually is. This guide explains, in plain language, exactly what "registering a company" means, who can do it, and what's involved in 2026 — including two new rules that…
If you've never registered a company before, the whole process can sound more complicated than it actually is. This guide explains, in plain language, exactly what "registering a company" means, who can do it, and what's involved in 2026 — including two new rules that first-timers often miss.
What Does It Mean to "Register a Company"?
Registering a company means creating a legal entity that's separate from you personally. Once it's registered with Companies House — the UK's official registrar — your business can own things, sign contracts, and be taxed in its own name, rather than everything falling on you as an individual. The certificate you get at the end is proof that this new legal entity exists.
Who Can Register a UK Company?
Almost anyone. You don't need to be a UK citizen or resident — you can register a UK company from anywhere in the world, as long as you have a UK registered office address and at least one director. You do need to be at least 16 years old, and you can't be an undischarged bankrupt or disqualified director.
What You'll Need to Get Started
Before you begin, have these ready:
- A company name that isn't already taken
- A UK address to use as your registered office
- A registered email address
- Details of at least one director and one shareholder
- A rough idea of your share structure
- A SIC code describing what your business does
The Registration Process, Explained Simply
1. Pick a Name
Search the Companies House register to make sure your name isn't already in use, and check it doesn't clash with an existing trademark.
2. Verify Your Identity
This is new for 2026: since 18 November 2025, every director and anyone with significant control over the company must verify their identity before you can file. You do this through GOV.UK One Login, or through a formation agent who can verify on your behalf.
3. Choose Directors and Shareholders
Decide who's running the company (directors) and who owns it (shareholders) — often the same person for a small first-time company. Work out how many shares exist and who holds them.
4. File with Companies House
Submit your application online for £100. Most applications are approved within 24 hours.
What Happens After You Register
Once you have your certificate of incorporation, a few things need to happen fairly soon:
- Register for Corporation Tax with HMRC within 3 months of trading
- Open a business bank account, kept separate from your personal finances
- Keep basic statutory records — who your directors and shareholders are
- Register for VAT if your turnover looks likely to cross the current threshold
None of these need to happen on day one, but it's worth knowing they're coming.
Mistakes First-Time Founders Make
- Trying to file before completing identity verification
- Assuming a home address abroad counts as a UK registered office
- Picking a SIC code that doesn't really describe the business
- Forgetting the registered email address is now mandatory, not optional
FAQs About Registering a UK Company
Do I need a solicitor or accountant to register a company? No — you can register directly with Companies House yourself. Many people choose to use a formation agent for convenience, especially for the identity verification step, but it isn't a legal requirement.
How much does it cost? £100 to file online, £156 for same-day filing, or £124 by post.
How long does it take? Usually within 24 hours if you file online and everything is correct.
What's the biggest change for 2026? Mandatory identity verification for directors and persons with significant control, introduced from 18 November 2025.
