Apparently they also prefer to stay in the single market for obvious reasons. They idd want to be British, but their situation is unique EDIT: but this is not the current events section of the forum. The OP really belongs here/ in this section? The transfers of sovereignty over Hong Kong and Macau are post 1991 historical events?
Regarding the other possessions mentioned above there was an armed conflict between Spain and Morocco in 2002, because of a rock in Mediterranean sea.