by Undo Capital
December 15, 2025

What Is a Confirmation Statement (CS01)?

A Confirmation Statement (CS01) is a mandatory annual filing that UK companies submit to Companies House to confirm that their registered information is accurate and up to date.

Confirmation Statement (CS01) Meaning

The confirmation statement's meaning centres on legal accuracy and ongoing compliance. To define a confirmation statement (CS01) in practice, it confirms key details such as directors, registered office address, shareholders, share capital and PSC (Persons with Significant Control) information. A clear confirmation statement definition ensures that the public record reflects the company’s current structure. Unlike annual accounts, the CS01 does not report financial performance; it purely verifies company data. Filing the confirmation statement on time is essential to avoid penalties and protect the company’s legal standing.

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