http://www.legislation.gov.uk/ukpga/1963/35/section/1Malaysia Act 1963An Act to make provision for and in connection with the federation of North Borneo, Sarawak and Singapore with the existing States of the Federation of Malaya.1978-02-01texttext/xmlenStatute Law Database2015-08-17Expert Participation2009-10-31 11For the purpose of enabling North Borneo, Sarawak and Singapore (in this Act referred to as “the new States”) to federate with the existing States of the Federation of Malaya (in this Act referred to as “the Federation”), the Federation thereafter being called Malaysia, on the day on which the new States are federated as aforesaid (in this Act referred to as “the appointed day”) Her Majesty’s sovereignty and jurisdiction in respect of the new States shall be relinquished so as to vest in the manner agreed between the United Kingdom of Great Britain and Northern Ireland, the Federation and the new States.2Her Majesty may by Order in Council enact State Constitutions to take effect for the new States immediately before the appointed day.