The Hong Kong Act 1985 (c. 15) was an Act of the Parliament of the United Kingdom that made provision for the ratification of the Sino-British Joint Declaration that was signed on 19 December 1984 in Beijing that agreed to end British sovereignty and jurisdiction over the then British dependent territory of Hong Kong to the People's Republic of China after 1 July 1997. It was given royal assent by Queen Elizabeth II on 4 April 1985.^[1]

Hong Kong Act 1985

Act of Parliament
Parliament of the United Kingdom
Long title	An Act to make provision for and in connection with the ending of British sovereignty and jurisdiction over Hong Kong.
Citation	1985 c. 15
Introduced by	Sir Geoffrey Howe, Secretary of State for Foreign and Commonwealth Affairs
Territorial extent	United Kingdom Hong Kong
Dates
Royal assent	4 April 1985
Commencement	25 May 1985
Expired	1 July 1997
Status: Spent
Text of statute as originally enacted
Text of the Hong Kong Act 1985 as in force today (including any amendments) within the United Kingdom, from legislation.gov.uk.

The Act became spent following the transfer of sovereignty on 1 July 1997.^{[citation needed][dubious – discuss]}