By the Company Assist team · Reviewed by a chartered accountant · Updated June 2026
Once a year, every UK company must tell Companies House: “our details on the register are correct.” That's the confirmation statement — form CS01. It's not accounts, it's not tax, and it takes minutes if your records are tidy.
Your registered office, directors, people with significant control (PSCs), share capital and SIC codes. If anything changed during the year, you confirm the updates have been filed.
Within 14 days of the end of your review period — usually the anniversary of incorporation. Companies House charges a £50 fee with the filing.
You can file free-plus-fee yourself through Companies House WebFiling. Or we'll do it for £74.99 including the £50 fee — we pre-fill everything from the register, you review and approve in one click, and we file the same day.
Your company could be registered by this time tomorrow.
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