HM Passport Office provides updated guidance for people who find a lost UK passport. The advice focuses on immediate, practical steps to ensure the document is handled safely and returned through the correct channels. Sources report that the guidance applies particularly when the finder comes across the passport while travelling. The central instruction is to report the found passport promptly and follow the official instructions provided by HM Passport Office rather than attempting to return it privately or keep it. The guidance is intended to help prevent misuse of the document and to speed up recovery for the passport holder. The Passport Office materials set out what information to provide when reporting, and they explain how the passport should be passed on or where it should be sent or taken according to the circumstances. Overall, the outlets agree that the key action is to contact HM Passport Office as directed and not to delay, since passports are sensitive documents and their whereabouts matter for identity and travel purposes.