This text describes the history and development of the Convention of Peking 1898 and the lease of the New Territories to Great Britain by China. This resulted in this area becoming part of the British colony of Hong Kong. The expiry date of the agreement was 1 July 1997, and now the date has passed, Hong Kong and the leased territories have returned to China. Since this date, various classified British government records and files have become available which shed new light on some aspects of the history of the Convention, and it is this information that has been incorporated into this edition. In addition, the author outlines the Joint Declaration and the events leading up to the expiry of the lease.