(CC) Photo: Prime Minister's Office David Cameron (left) was the UK Prime Minister from 2010 to 2016; Nick Clegg (right) was the Deputy Prime Minister until 2015.
Prime Minister is a term used to describe the head of an elected government or the principal minister of a sovereign or state.[1] The term originated in the United Kingdom though until the early 20th century it was unofficial.[2] In many places they coexist with a monarchy.