The British Nationality (Cyprus) Order 1960

2.  Subject to the proviso to subsection (1) of section four of the Cyprus Act, 1960, any citizen of the United Kingdom and Colonies who is granted citizenship of the Republic of Cyprus in pursuance of an application such as is referred to in Section 4, 5 or 6 of Annex D shall thereupon cease to be a citizen of the United Kingdom and Colonies.