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Companies House
Companies House Links: Search, Filing, Identity Verification and Strike-Off
Official links only, organised by task, with notes on who uses each one.
Official sources only · Links checked 23 September 2026 · Last updated 23 September 2026
Quick answer
Companies House services live on GOV.UK and the Find and update company information service. Use them to search companies, register a company, file confirmation statements and accounts, verify identity, register as an ACSP and apply for or object to strike-off. Private company accounts are due 9 months after year end.
Search and register
Use the search service to check officers, filing history and due dates. You can follow a company for email alerts from there.
| Task | Official link | Who uses it | Notes |
|---|---|---|---|
| Find and update company information (search) | Open Find and update company information (search) (opens in new tab) | Anyone | Follow a company for email alerts |
| Register your company | Open Register your company (opens in new tab) | New companies | — |
Filing
Filing deadlines move with the year end. Companies House sync in your practice software keeps them current.
| Task | Official link | Who uses it | Notes |
|---|---|---|---|
| File your confirmation statement | Open File your confirmation statement (opens in new tab) | Companies | — |
| Filing your company accounts and tax return | Open Filing your company accounts and tax return (opens in new tab) | Companies | — |
| Company authentication codes for online filing | Open Company authentication codes for online filing (opens in new tab) | Companies, agents | — |
| Late filing penalties | Open Late filing penalties (opens in new tab) | Companies | — |
Identity verification and ACSPs
Directors and people with significant control must verify their identity. Agents can register as an ACSP to verify clients.
| Task | Official link | Who uses it | Notes |
|---|---|---|---|
| Verify your identity for Companies House | Open Verify your identity for Companies House (opens in new tab) | Directors, PSCs | — |
| Being an Authorised Corporate Service Provider (ACSP) | Open Being an Authorised Corporate Service Provider (ACSP) (opens in new tab) | Firms | — |
Closing a company
Check for debts and final returns before applying to strike off.
| Task | Official link | Who uses it | Notes |
|---|---|---|---|
| Strike off your limited company | Open Strike off your limited company (opens in new tab) | Directors | — |
| Object to a limited company being struck off | Open Object to a limited company being struck off (opens in new tab) | Creditors, directors | — |
| Contact Companies House | Open Contact Companies House (opens in new tab) | Anyone | — |
See it working with your own clients
Client references, payment reminders and deadlines in one place.
Keep all of this inside your practice management software
Store each client’s UTR, VAT number, PAYE reference, Accounts Office reference and Corporation Tax payment reference in custom fields on the client record. Create one payment instructions email template with tokens that fill in each client’s own reference, then send it to one client or in bulk before each deadline. Set automated reminders and recurring tasks for every payment date, and pull filing deadlines with Companies House sync. Remindoo doesn’t submit filings, take payments or connect to HMRC — it keeps the references and the reminders in one place.
See the Remindoo how-to guides and getting started.
Related templates
More link categories
Frequently asked questions
When is a confirmation statement due?
At least once every 12 months. It is due within 14 days of the end of the review period, which usually starts on the incorporation date or the date of the last statement. Check the company’s due date on the Companies House search service.
How do I verify my identity for Companies House?
Follow the Verify your identity for Companies House guidance on GOV.UK. You can verify directly with Companies House, or through an Authorised Corporate Service Provider. You then receive a personal code to link to your roles.
What is an Authorised Corporate Service Provider?
An ACSP is a firm registered with Companies House that can verify identities and file on behalf of clients. Accountancy firms that are AML-supervised can apply. GOV.UK’s Being an ACSP guidance explains eligibility and responsibilities.
How do I register a company with Companies House?
Use the Register your company service on GOV.UK. You need the company name, registered office address, at least one director, people with significant control, shareholders and SIC codes. Identity verification requirements also apply.
When are Companies House accounts due?
For private companies, 9 months after the accounting reference date. First accounts have different rules. Companies House charges automatic late filing penalties, so set internal deadlines well before the statutory date.
How do I keep track of every client’s Companies House deadlines?
Use Companies House sync in your practice management software. Remindoo pulls company details and filing deadlines from Companies House so accounts and confirmation statement dates stay up to date on each client record.
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Last updated 23 September 2026. General guidance, not regulatory advice. Always follow the official GOV.UK page.
Why a single client record matters
When client details, deadlines, documents and conversations are spread across inboxes and spreadsheets, time goes on searching instead of on client work.
One version of the truth
Everyone sees the same services, contacts, deadlines and notes for each client.
Accurate deadlines
Companies House sync brings in company details and filing dates, reducing manual errors.
Better client service
A full timeline means anyone can answer a client question with the history in front of them.
Secure document sharing
A client portal is safer than sending financial documents as email attachments.
Practical tips from UK practice
- Import companies from Companies House rather than typing details by hand.
- Record every service a client takes, so recurring work is created automatically.
- Add a short note after every important client call.
- Ask clients to upload documents through the portal rather than by email.
Related Remindoo features
Written and reviewed by Waqas Sagar ACA FCCA FMAAT, Chartered Accountant with 18+ years in practice. Founder and MD of Accotax, an ICAEW, ACCA and AAT regulated London practice that has served over 5,000 clients, and founder of Remindoo. Guidance is general; check current GOV.UK and professional body guidance for your firm.
What UK practices say about Remindoo
Read all reviews on Trustpilot“With Remindoo, everything from the first enquiry to onboarding and ongoing client management is tracked in one place… It saves us hours and gives me, as a practice owner, complete visibility of where the firm stands.”
“The biggest benefit is having clients, tasks, deadlines, workflows, proposals and communication all organised in one place.”
“During my trial, the team were absolutely amazing. They helped onboard my clients, set up my settings and made sure everything was ready for me to use… they made the whole process completely stress-free.”
“It brings client information, tasks, recurring deadlines, workflows and reminders together in one place, giving us much better visibility across the team.”
