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
Britons in Hong Kong Britons in Hong Kong Britons never made up more than a small portion of the population in Hong Kong, despite Hong Kong having been under British rule for more than 150 years. However, they did leave their mark on Hong Kong's institutions, culture and architecture. The British population in Hong Kong today consists mainly of career expatriates working in banking, education, real estate, law and consultancy, as well as a large number of British-born ethnic Chinese, former Chinese émigrés to the U.K., and Hong Kongers (mostly ethnic Chinese) who successfully applied for full British citizenship before the transfer of sovereignty