The British Prime Minister is not directly elected; instead, he is appointed by the Queen after the general election. The leader of the party that secures the most seats in the House of Commons automatically becomes Prime Minister and subsequently forms the government.
The British Prime Minister election first takes place at the local level. Before being elected Prime Minister, the individual must secure a seat in the Parliament. To become a Member of Parliament, the candidate must secure more votes than his rival in their locality. If any party secures a majority, the Queen invites its respective leader to become Prime Minister and form government. If the leader agrees to the post, he assumes the role immediately.
If a party does not secure a commons majority, the largest single party could form a minority government or partner with other parties to form a collation. The largest single party can also reach an informal agreement with an opposing party to become a sustainable government. In most situations, the party leader with the most seats would attempt to partner and form a coalition with the largest of the smaller parties. Britain’s electoral system favors the two largest parties, which are known as the Labour and Conservative parties.