Prime Minister of the United Kingdom century as a convention of the constitution, the position of Leader of the Opposition was given statutory recognition in 1937 by the Ministers of the Crown Act. British Prime Ministers have never been elected directly by the public. A Prime Minister need not be a party leader; David Lloyd George was not a party leader during his service as prime Minister during World War I, and neither was Ramsay MacDonald from 1931 to 1935. Prime Ministers have taken office because they were members of either the Commons or Lords, and either inherited a majority in the Commons or won more
Prime Minister of the United Kingdom office or political privileges can expect removal for failing to support the Prime Minister. Restraints imposed by the Commons grow weaker when the Government's party enjoys a large majority in that House, or among the electorate. In most circumstances, however, the Prime Minister can secure the Commons' support for almost any bill by internal party negotiations, with little regard to Opposition MPs. However, even a government with a healthy majority can on occasion find itself unable to pass legislation. For example, on 9 November 2005, Tony Blair's Government was defeated over plans which would have allowed police to detain terror