Waves of mass migrations from Hong Kong villagers exercised their right of abode in the United Kingdom and left for Europe. In 1967, a series of large-scale riots erupted in Hong Kong, causing social instability. These events led some of the richer Hong Kong residents to move abroad. Emigration took place to countries in Southeast Asia, South Africa or South American countries. This wave did not come to a rest until the mid-1970s. On the 19th of December 1984, the People's Republic of China and the United Kingdom signed the "Sino-British Joint Declaration", validated the 1997 transfer of sovereignty over Hong Kong to China. The declaration prompted
British Forces Overseas Hong Kong During the 1980s and 1990s, the CBF was normally a career Major General or Lieutenant General from the British Army. Until 1966, the CBF was an ex-officio member of the Legislative Council. Throughout the years of British rule in Hong Kong, a variety of British Army units spent various durations of time in the colony as resident units. In latter stages of the post-war period, British army units were sent to Hong Kong on a rotational basis for a period of three years. The following list contains resident units only and those which stayed in Hong Kong for short durations