Faced with increased openness by the government of the People`s Republic of China and economic reforms on the continent, Margaret Thatcher, then British Prime Minister, sought the agreement of the People`s Republic of China on the continuation of the British presence on the territory.  Some political analysts felt that an agreement was urgently needed, as there were concerns that Hong Kong`s economy would collapse without a contract in the 1980s. Concerns about land ownership in the new leased territories also contributed to the problem. Although discussions on Hong Kong`s future began in the late 1970s, the final date of the joint declaration was influenced by factual and economic factors rather than geopolitical imperatives.  Britain quickly returned to this unofficial part of the agreement and attacked Kowloon Walled City in 1899 to find it abandoned. They didn`t do anything with it, or the outpost, and the question of ownership of Kowloon Walled City was directly in the air. The outpost consisted of a yamen, as well as buildings that grew up in sparsely populated neighborhoods from the 1890s to the 1940s. This group was a connection organ, not a power organ, where each party could send up to 20 support coworkers. It is expected to meet at least once a year at each of the three sites (Beijing, London and Hong Kong).
It was established in Hong Kong on July 1, 1988. It should also help HKSAR maintain and develop economic and cultural relations and conclude agreements on these issues with the relevant states, regions and international organisations, and could therefore create specific sub-groups. Between 1985 and 2000, the Joint Liaison Group held 47 plenary sessions, 18 in Hong Kong, 15 in London and 14 in Beijing. The signing of the joint declaration caused some controversy in the United Kingdom, as British Prime Minister Margaret Thatcher accepted the Chinese Communist government, represented by Deng Xiaoping.  In the White Paper containing the Joint Statement, Her Majesty`s Government stated that “the alternative to the adoption of this agreement is not to reach an agreement”, a statement that refuted criticism that the Declaration had made too many concessions to China and highlighted China`s considerable influence during the negotiations.  But the UK says the agreement – known as a joint declaration – is under threat because the region has passed a new law that gives China new extensive controls over the population of Hong Kong.