The joint overall declaration between Salina and Great Britain does not have a mechanism approved by both parties to ensure compliance. Although registered with the United Nations, the Agreement did not contain any oversight mechanisms by the United Nations. Therefore, only the signatories of the declaration have the right to address any violations of the conditions. The agreement signed in 1984 was to last until 2047. Just as the atmosphere of the discussions became cordial, members of the Hong Kong Legislative Council were impatient with the long-standing secrecy of the progress of the Sino-British talks on the Hong Kong issue. According to a motion by legislator Roger Lobo, “this Council considers it essential that the proposals for hong Kong`s future be discussed in this Council before an agreement is reached,” was unanimously adopted.  This group was a liaison organ, not a power organ, in which 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. During the 2014 Umbrella Revolution, a campaign against perceived violations of mainland China in HKSAR, Chinese officials concluded for the first time that China considered the joint declaration “invalid,” according to a British MP.  This conclusion was found to be “manifestly erroneous” by a senior Hong Kong lawyer and rejected by the British Foreign Minister, who stated that the document was a legally binding agreement that had to be respected.   Rita Fan, then Hong Kong`s only representative on the Standing Committee of the National People`s Congress in Beijing, stated that responsibility for the UK`s oversight had expired and that the joint declaration did not provide for universal suffrage.  One of the most important achievements has been to ensure the continuity of the independent judicial system in Hong Kong, including agreements in the areas of commercial navigation, civil aviation, nuclear materials, cetacean fishing, the Submarine Telegraph, space and many others.