Companies House said in a news story published on 20 August 2026 that GOV.UK One Login would become the main sign-in option for the Find and update company information service in late August. Existing users could keep signing in with their current details for now, with that option placed further down the sign-in page, while all new users would need a GOV.UK One Login to access Companies House services.

The department said all users would eventually have to move to GOV.UK One Login, with plenty of notice promised beforehand. It described the change as affecting the sign-in process only, adding that users were not being asked to verify their identity. GOV.UK One Login requires an email address, a password and multi-factor authentication by authenticator app or SMS. Companies House said it began moving its online services to the system in autumn 2024.

For users with shared accounts, the department said each GOV.UK One Login must be linked to one individual using their own email address and phone number. It advised teams sharing a Companies House account to plan how access would be managed once GOV.UK One Login became compulsory, warning that sharing an account after linking could trigger security controls that lock users out.