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What is a CS01?

What is a CS01?

What is it?

The CS01 (Confirmation Statement) replaced the “Annual Return” in 2016. It is a document that must be submitted to Companies House annually, confirming the particulars of the company.

Who is it for?

All Companies and LLP’s registered in the UK.

How does it work?

 The CS01’s primary function is to confirm that the information held in respect of the company’s directors, registered office, shareholders and share capital is accurate and up to date. When you file your first CS01, you’ll also need to confirm the information regarding your PSC’s (see “What is a PSC” for more information). The document must be filed within 14 days of the “made up to” date.

It must be filed covering a 12-month period, either on the anniversary of the incorporation of the company or the anniversary of the “made up to” date of the last CS01 filed. Note, this may have changed if a CS01 has been filed early. This date can be found by searching on Companies House for the company record.

The CS01 is also used if you need the change the SIC code for your company. This can be done at any time during the year, but if filed early, it will move your CS01 date permanently.

What should I do next?

You should check if there have been any changes to the company’s directors/secretary (including residential addresses), registered office, shareholders or share capital. If so, you will need to file the relevant form prior to filing the CS01.

An authorised signatory (most commonly a director or company secretary) must review the details and sign the form. There is a filing fee of £13 payable on submission of the annual CS01, if filed online. If the CS01 is posted to Companies House on paper, this increases to £40.

The CS01 must be filed every year. This still applies where there have been no changes, or if the company is dormant. Failure to do so can result in your company being struck off the Register by Companies House.

If you have any queries regarding the above or have any other questions, please do not hesitate to contact Charlotte Leslie on 01865 261119 or email.


First Published 3 November 2021
Last Updated 3 November 20201

3 November 2021
First published.

Find out more about Charlotte Leslie

Charlotte  Leslie

Charlotte Leslie

Charlotte is our Company Secretarial Advisor