In 2002, Gibraltar residents voted overwhelmingly by referendum to reject any "shared sovereignty" arrangement between the UK and Spain; the Government of Gibraltar insisted on equal participation in talks between the two countries; Spain disapproved of UK plans to grant Gibraltar greater autonomy; Mauritius and Seychelles claim the Chagos Archipelago (British Indian Ocean Territory); in 2001, the former inhabitants of the archipelago, evicted 1967 - 1973, were granted U.K. citizenship and the right of return, followed by Orders in Council in 2004 that banned rehabitation, a High Court ruling reversed the ban, a Court of Appeal refusal to hear the case, and a Law Lords' decision in 2008 denied the right of return; in addition, the United Kingdom created the world's largest marine protection area around the Chagos islands prohibiting the extraction of any natural resources therein; UK rejects sovereignty talks requested by Argentina, which still claims the Falkland Islands (Islas Malvinas) and South Georgia and the South Sandwich Islands; territorial claim in Antarctica (British Antarctic Territory) overlaps Argentine claim and partially overlaps Chilean claim; Iceland, the UK, and Ireland dispute Denmark's claim that the Faroe Islands' continental shelf extends beyond 200 nm.

Refugees (country of origin): 11,368 (Iran); 11,249 (Somalia); 10,302 (Zimbabwe); 10,010 (Eritrea); 9,166 (Afghanistan); 5,297 (Pakistan) (2014).

United Kingdom of Great Britain and Northern Ireland is producer of limited amounts of synthetic drugs and synthetic precursor chemicals; major consumer of Southwest Asian heroin, Latin American cocaine, and synthetic drugs; money-laundering center.