A certified copy is a reproduction of a document that a recognised professional or issuing body has signed and dated to confirm it is a true copy of the original seen. The term is descriptive and used across practice; in specific contexts legislation, court rules or registry guidance prescribe who may certify and the evidential effect.Key features: the certifier adds wording such as ‘I certify this is a true copy of the original’, with name, signature, professional capacity, contact details and date. For photo ID, additional wording (‘true likeness of [name]’) is often required. A certified copy does not itself prove the authenticity of the original, save where an official sealed or office copy is issued by the authority.Typical uses include KYC/AML due diligence, conveyancing and Land Registry applications, Companies House filings and court bundles.Who can certify includes: in England and Wales and Northern Ireland, a solicitor, notary public or commissioner for oaths; in Scotland, a solicitor or notary public; in Ireland, a solicitor, notary public, commissioner for oaths or, where accepted, a peace commissioner. Recipient requirements vary and may demand a notarial copy or apostille; check the wording.