From 13 October 2025, Companies House will  require all businesses to use GOV.UK One Login to access WebFiling. This change  is part of a wider government move to introduce a single, more secure login  system across all online services.
What’s Changing?
  From 13 October 2025, you’ll need to connect  your WebFiling account to GOV.UK One Login before you can continue filing.
  If you share your WebFiling account with others,  only one person will be able to connect each WebFiling account to their GOV.UK  Login. Anyone who shares access will need to create their own GOV.UK One Login,  using a different email address.
  This is part of a wider move as the  government intends for GOV.UK One Login to be increasingly used for accessing  online services.
What You Can Do to Get Ready
  To avoid last-minute issues, here are a few  simple steps to take before October 2025:
  - Check your email addresses – make  sure the email you use for WebFiling is current and accessible. If you also use  “Find and update company information,” use the same email address for both.
 
  - If you don’t already have one,  you could set up a GOV.UK One Login in advance, using the same email as your  Companies House accounts. This will make connecting smoother.
 
  - Check that you have the  authentication code handy for each company you file for. You may need to enter  it when you connect your WebFiling account to GOV.UK One Login.
 
  - Review who has access – if your  team shares a WebFiling login, each person will need their own account going  forward. Start planning how to manage this.
 
  - Identity verification – directors  and People with Significant Control (PSCs) need to identity early using GOV.UK  One Login.
 
If you try to sign into WebFiling after 13  October 2025, you’ll be redirected to connect your account with GOV.UK One  Login.
  See: https://www.gov.uk/government/news/access-to-companies-house-webfiling-accounts-to-move-to-govuk-one-login