[Description] This note briefly narrates a legal history of the decriminalisation of homosexual sex in the United Kingdom and United States through major cases and statutes. It is confined to sexual activity, over which privacy claims have been upheld, only; it does not track current developments regarding same-sex marriage. It does not examine Indian law in respect of homosexuality nor the constitutional challenges to section 377 of the Indian Penal Code, which demand a strict and separate scrutiny.