Blog/UK Business Setup

What is a UK Confirmation Statement (CS01) and Who Must File It?

A comprehensive legal guide for overseas directors on Companies House Form CS01, annual review dates, corporate governance updates, and avoiding compulsory company strike-off.

ADVAQ Legal Team
7 Min Read · Published July 2026
Companies House Statutory Filing
Form CS01 Requirements at a Glance
  • Mandatory Annual Duty: Every registered UK Limited Company must file Form CS01 with Companies House once every 12 months.
  • 14-Day Filing Window: The statement must be submitted within 14 days after your company's annual review period ends.
  • What is Confirmed: Registered Office, Directors' Service Address, Share Capital, Shareholders, People with Significant Control (PSC), and SIC industry code.
  • Compulsory Strike-Off Warning: Failure to file results in Companies House initiating dissolution proceedings, which legally freezes company bank accounts.

1. What is a UK Confirmation Statement (Form CS01)?

Under Section 853A of the Companies Act 2006, every UK company must deliver a Confirmation Statement (Form CS01) to Companies House at least once in every 12-month period.

The purpose of the Confirmation Statement is to verify that all statutory company records held on the public Companies House register are accurate and up to date.

2. Confirmation Statement vs Annual Tax Accounts

Many first-time overseas directors confuse the Confirmation Statement with annual financial accounts. They serve entirely distinct legal functions:

Confirmation Statement (CS01)

Corporate Governance: Confirms directors, shareholders, registered address, and PSC data. Submitted to Companies House. Contains NO financial figures.

Annual Tax Accounts & CT600

Financial & Tax Reporting: Reports profit/loss, balance sheet, and Corporation Tax liabilities. Submitted to HMRC and Companies House.

3. What Information Must Be Verified on Form CS01?

When submitting Form CS01, you must review and confirm six core company metrics:

Mandatory Verification Checklist:

  • Registered Office Address: Confirms physical London or UK office location.
  • Directors & Officers Details: Service addresses and residential address privacy records.
  • People with Significant Control (PSC): Beneficial owners holding > 25% shares or voting rights.
  • Statement of Capital: Total number, class, and aggregate nominal value of issued shares.
  • Shareholder Register: Current list of company shareholders.
  • SIC Code: 5-digit Standard Industrial Classification code describing primary business activity.

ANNUAL COMPLIANCE FILING SERVICE

File Your UK Confirmation Statement (CS01)

ADVAQ prepares and files your annual Companies House Confirmation Statement on time, paying the official £34 filing fee and guaranteeing zero compliance notices.

4. Annual Filing Deadlines & Review Period Calculation

Your company's annual review period starts on the day of incorporation and ends exactly 12 months later.

You have a strict 14-day statutory grace period from the end of the review period to submit Form CS01 to Companies House.

5. Consequences of Late Filing: Compulsory Strike-Off

Ignoring Confirmation Statement deadlines carries severe legal repercussions under UK corporate law:

Compulsory Strike-Off (First Gazette Notice): If a CS01 is overdue by more than 30 days, Companies House issues a Gazette Notice to dissolve the company.
Frozen Bank Accounts: Once a company is struck off, all corporate bank accounts (Wise, Revolut, Payoneer) are instantly frozen and all company assets become property of the Crown (Bona Vacantia).

Frequently Asked Questions

COMPANIES HOUSE STATUTORY FILING

File Your Confirmation Statement (CS01) with ADVAQ

Includes Companies House £34 fee, PSC register update, and guaranteed compliance for non-resident directors.