CS01 Companies House Explained – Confirmation Statement Filing Made Easy
Every UK company must file a CS01 Companies House form, also known as a Confirmation Statement, at least once every 12 months. This filing keeps company records up to date and ensures that Companies House and HMRC have the correct information about your business.
At Audit Consulting Group, we take care of the companies house forms CS01 for our clients — ensuring accuracy, compliance, and on-time filing to avoid penalties.
What is the CS01 Companies House Form?
The CS01 Companies House form replaced the old Annual Return (AR01) in 2016. It provides a snapshot of your company’s key information, including:
- Registered office address.
- Directors and company secretary details.
- Shareholders and share structure.
- Persons with Significant Control (PSC).
- Statement of capital.
Filing this form is a legal requirement. Failure to submit it can result in fines, prosecution, and even your company being struck off the register.
When Must You File the CS01 Companies House Form?
- At least once every 12 months.
- Within 14 days of the due date (the anniversary of company incorporation or the date of your last statement).
- Additional filings can be made anytime if your company details change.
👉 File online here: https://www.gov.uk/government/publications/confirmation-statement-cs01
How to Complete Companies House Forms CS01
The cs01 companies house form can be filed online or on paper. Here’s what you need to include:
- Company information – registered number, name, and address.
- Shareholders – confirm or update who owns shares.
- PSC register – disclose individuals or legal entities with significant control.
- Statement of capital – details of issued shares and their values.
- SIC codes – confirm your company’s industry classification.
💡 Tip: Filing online is cheaper (£13) compared to paper filing (£40) and is processed faster.
Common Mistakes to Avoid
❌ Forgetting to update shareholder or PSC details.
❌ Using old SIC codes not matching your business activity.
❌ Missing the 14-day deadline — which can trigger penalties.
❌ Filing only once and forgetting that you must file annually.
Example Cases – CS01 Companies House
- Case 1: Director Update
A company appointed a new director but forgot to include the change in their cs01 companies house submission. This resulted in outdated records. Audit Consulting Group corrected and resubmitted the filing. - Case 2: Share Structure Change
When new investors bought shares, the business needed to update the statement of capital in their companies house forms cs01. Our team managed the update to avoid compliance issues. - Case 3: Late Filing
A startup missed their due date and risked being struck off. We quickly filed their CS01 and restored their good standing.
FAQs – CS01 Companies House
Q1: What happens if I don’t file my CS01?
Your company can be fined and even struck off the register.
Q2: Do dormant companies need to file a CS01?
Yes, all companies must file, even if dormant.
Q3: Can I change company information through the CS01?
Yes, but some changes (like director resignations) require separate filings.
Q4: Is filing online better than paper?
Yes, online filing is faster, cheaper, and reduces errors.
Q5: Do I need an accountant for the CS01?
Not always, but professional help ensures compliance and accuracy.
Why Use Audit Consulting Group?
Filing the CS01 Companies House form may look simple, but errors or missed deadlines can have serious consequences. At Audit Consulting Group, we:
- Handle the entire companies house forms cs01 filing for you.
- Ensure accuracy and compliance with Companies House rules.
- Monitor deadlines so you never miss a filing date.
- Provide advice on PSC registers, SIC codes, and share structures.
👉 Let us manage your confirmation statement so you can focus on running your business.
Official HMRC & Companies House guidance
