Hong Kong–United Kingdom relations a deeply important role in the formation of the modern Hong Kong. Sovereignty of Hong Kong was ceded to the UK "in perpetuity" on 29 August 1842 through the Treaty of Nanking. The UK further expanded the territory of Hong Kong in 1860 by another cessation, plus a 99-year lease of the New Territories in 1898. The stability, security, and predictability of British law and government enabled Hong Kong to flourish as a centre for international trade. Localisation of teritary institutions, the Hong Kong government and the independent Judiciary in the run-up to the 1997 Handover of sovereignty, caused a
Handover of Hong Kong territories were secured and conditions were ripe for its gradual abrogation. A few months after Thatcher's visit to Beijing, the PRC government had yet to open negotiations with the British government regarding the sovereignty of Hong Kong. Shortly before the initiation of sovereignty talks, Governor Youde declared his intention to represent the population of Hong Kong at the negotiations. This statement sparked a strong response from the PRC, prompting Deng Xiaoping to denounce talk of "the so-called 'three-legged stool'", which implied that Hong Kong was a party to talks on its future, alongside Beijing and London. At the preliminary stage