Prime Minister of the United Kingdom office and should be addressed by the official title prefixed by "The Right Honourable" and not by a personal name. Although this form of address is employed on formal occasions, it is rarely used by the media. As "Prime Minister" is a position, not a title, the incumbent should be referred to as "the Prime Minister". The title "Prime Minister" (e.g. "Prime Minister James Smith") is technically incorrect but is sometimes used erroneously outside the United Kingdom, and has more recently become acceptable within it. Within the UK, the expression "Prime Minister Smith" is never used, although it, too, is
Deputy Prime Minister of Singapore Prime Minister. The office of Deputy Prime Minister dates back to 1959 and was appointed at first by the Governor of Singapore then the Yang di-Pertuan Negara (vice-regal head of state), when Singapore achieved self-governance as the State of Singapore within the British Empire. The title of Deputy Prime Minister remained unchanged after the merger with the Federation of Malaya, Sarawak and North Borneo, while Singapore was a state in the Federation of Malaysia from 1963 to 1965, and after independence in 1965. Toh Chin Chye was the first deputy prime minister of Singapore from 1959 to 1968 and retired