Track your Companies House WebFiling filings by API

What you can build on WebFiling

• Get recent filings

  Build this

  Reads the My Recent Filings screen: every filing sent from your WebFiling account in the last 10 days, with its type, company and status.

  Takes

  Status (optional)

  Returns

  Filing type, company name, company number, date submitted, status

• Check a company's PROOF and eReminders

  Build this

  Opens one company in your account and reads its PROOF status from the company overview and the addresses on the eReminder management screen.

  Takes

  Company number

  Returns

  Company name, PROOF status, eReminder email addresses, whether each address is activated

• File a confirmation statement with no changes

  Build this

  Files a CS01 for one company for the confirmation date you give, confirms there are no updates, and pays from your presenter account.

  Takes

  Company number, authentication code, confirmation date, Presenter ID, Presenter Authentication Code

  Returns

  Company number, confirmation date, filing type, status shown after submission

Automate WebFiling with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• Rejected filings, at the end of each examining day

  Build this

  Starts

  Every weekday at 19:30, after Companies House stops examining documents at 19:00

  Step 1

  Get recent filings from My Recent Filings.

  Step 2

  Keep the filings whose status is Rejected or failed payment and that were not like that on the last run.

  Step 3

  Email you the list with filing type, company name, company number and status.

• Accepted filings, posted to your practice system

  Build this

  Starts

  Every weekday at 19:30

  Step 1

  Get recent filings from My Recent Filings.

  Step 2

  Keep the filings that changed to Accepted since the last run, and stop when there are none.

  Step 3

  Post filing type, company name, company number and date submitted to your practice system's webhook.

• Client companies without an activated eReminder

  Build this

  Starts

  Every Monday at 8:00

  Step 1

  For each company number you list, check its PROOF status and eReminder addresses.

  Step 2

  Keep the companies with no activated eReminder address or not in PROOF.

  Step 3

  Email you the list with company number, company name, PROOF status and the addresses found.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Get recent filings” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "ewf.companieshouse.gov.uk/get_recent_filings",
    "input": {
      "status": "Rejected"
    }
  }'

{
  "status": "completed",
  "data": {
    "filings": [
      {
        "filing_type": "Confirmation statement (CS01)",
        "company_name": "Acme Fabrication Ltd",
        "company_number": "99000001",
        "date_submitted": "2026-11-10",
        "status": "Rejected"
      },
      {
        "filing_type": "Change of registered office address (AD01)",
        "company_name": "Northwind Trading Ltd",
        "company_number": "99000002",
        "date_submitted": "2026-11-09",
        "status": "Rejected"
      }
    ],
    "count": 2
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

WebFiling’s own options

Companies House has a REST filing API for registered office address, registered email address and insolvency changes, used through software connected to its OAuth 2.0 service. Accounts, confirmation statements, officer and PSC changes are filed through commercial software with a presenter account, or in WebFiling. A public data API reads what is on the register.

Read on November 12, 2026: Companies House filing API overview, Using software to file your company's information, Filing your Companies House information online.

Signing in to WebFiling

Since 13 October 2025 you sign in to WebFiling with GOV.UK One Login: email address, password and a security code sent by text message to a UK mobile or made by an authenticator app. To file for a company you also need its authentication code. With Fous you sign in once through WebFiling's own sign-in with your own account, and the login is sealed with AES-256 and never seen by your code or AI agents.

Worth knowing

My Recent Filings covers 10 days

It lists filings sent from your account in the last 10 days, and seeing a filing there does not mean it was accepted. The acceptance or rejection email normally arrives within 2 working days.

One person per WebFiling account

Only one person can connect each WebFiling account to their GOV.UK One Login. Anyone who shared it needs their own One Login with a different email address.

Authentication codes come by post

A company's authentication code is posted to its registered office and can take up to 10 working days. Once entered, the company can be stored in your account for later filings.

Accounts move to software in April 2028

From 1 April 2028 all companies must file accounts with commercial software, and web filing of accounts closes. Other forms stay on the web services.

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