Register with Companies House
Companies House is the UK’s registrar of companies. Limited companies, PLCs and LLPs only come into existence when Companies House registers them – and they then appear on the public register with their directors, owners and accounts.
Who has to register?
Private and public limited companies, limited liability partnerships (LLPs) and limited partnerships register with Companies House. Sole traders and ordinary partnerships do not – they register with HMRC for Self Assessment instead. Companies are registered in England and Wales, Scotland or Northern Ireland, depending on where their registered office is.
Process and documents
You apply online with the company name, registered office address, registered email address, SIC code, directors, persons with significant control, statement of capital and articles of association. Since 18 November 2025, directors and PSCs must verify their identity first and give their personal code. Companies House usually processes online applications within 24 hours and issues a certificate of incorporation with the company number.
Afterwards you keep the register up to date: changes to directors or PSCs, an annual confirmation statement and annual accounts.
Costs – and preparation with planix
Since 1 February 2026, incorporating online costs £100 and the annual confirmation statement £50 online. Searching the register is free. planix prepares all the details so that your application goes through first time.
Frequently asked questions
Do I have to register my sole trader business with Companies House?
No. Sole traders register with HMRC for Self Assessment. Only companies, LLPs and limited partnerships are registered with Companies House.
What does registering with Companies House cost?
Incorporating a company or LLP online costs £100 (since 1 February 2026). Each year a confirmation statement follows at £50 online. Filing annual accounts is free.
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