http://www.legislation.gov.uk/uksi/1960/2215/signature/made
The British Nationality (Cyprus) Order 1960
Westlaw
King's Printer of Acts of Parliament
2011-05-19
THE BRITISH NATIONALITY
Articles 1 and 2 of this Order, which is made under section 4 of the Cyprus Act, 1960, specify the persons who are to cease to be citizens of the United Kingdom and Colonies under section 4(1) of the Act in accordance with the agreement for the establishment of the Republic of Cyprus.
W.G. Agnew