Companies House identity verification and ACSPs: a business guide

Companies House began compulsory identity verification for new directors and people with significant control on 18 November 2025, with a transition period for existing roles. The date by which a person must verify depends on their role and filing timetable, so check the Companies House service rather than relying on a generic deadline.

An Authorised Corporate Service Provider is a business such as an accountant or solicitor that is registered with Companies House and supervised in the UK for anti-money-laundering purposes. An ACSP can verify identities for Companies House, but its registration is not a general endorsement of every service it provides.

Ask for the agent's legal entity name, Companies House ACSP registration details, AML supervisor, professional-body membership where claimed, professional indemnity insurance and written scope. Confirm who will verify identity, what evidence is needed, how it is stored and what the fee covers.

TaxNuvia keeps marketplace approval separate from credential evidence. A listing must not imply that a firm is an ACSP unless evidence has been reviewed, and clients should still check the official position before instructing a firm. No public client brief includes a person's name, business name or full postcode.