Human rights — Right to a fair trial — Deprivation of liberty — Fugitive wanted for extradition seeking asylum in embassy — Whether detained in embassy — Whether detention arbitrary — United Nations Human Rights Council Working Group on Arbitrary Detention regarding deprivation of liberty as arbitrary in five categories — Whether any category applicable — Whether deprivation of liberty consistent with relevant international norms — Universal Declaration of Human Rights, 1948, Articles 9 and 10 — International Covenant on Civil and Political Rights, 1966, Articles 7, 9(1), (3) and (4), 10 and 14 — Responsibility of United Kingdom and Swedish Governments — Remedy