Leader of the Opposition (UK)

The Leader of the Opposition in the Parliament of the United Kingdom is the leader of the largest political party in opposition to the government in the House of Commons. The Opposition Leader appoints a Shadow Cabinet of senior Opposition politicians, each of whom scrutinises the work of equivalent government ministers. Since December 2005 the Leader of the Opposition has been David Cameron. In the House of Lords, the leader of the second-largest party is also known as the Leader of the Opposition, but out of context the title usually refers to the Commons Opposition leader, who is most likely also the overall party leader.

House of Commons

When the Leader of the Opposition's party wins a general election, it is expected that he or she will become the next Prime Minister, and is invited by the Head of State to form a new government. In contrast, a new Leader of the Opposition emerges immediately, without any formal ceremony - for example, when John Major resigned as Prime Minister in 1997 following an election defeat, he left Buckingham Palace as the Leader of the Opposition, as his party was now second-placed in terms of number of seats in Parliament.

The office of Leader of the Opposition and their party receive the largest share of 'Short money' (state funding); for example, in 2005-2006 the current Opposition party, the Conservatives, received over £4 million in various expenses, with money also spent on vehicles and security. In other words, in the British parliamentary system, the public pays political parties to oppose the elected government.

As a potential Prime-Minister-in-waiting, the Leader of the Opposition frequently appears in the media, commenting and criticising on the government's activities, and presenting alternative proposals that might form policy in their own future government. Their most prominent parliamentary duty is the weekly appearance at a debate known as 'Prime Minister's Questions', in which the Leader of the Opposition faces the Prime Minister over the floor of the House of Commons. The Opposition Leader asks six questions, which are not made available to the Prime Minister's office in advance. Another way in which parliamentary activities present the Opposition Leader as a potential Prime Minister is at the State Opening of Parliament, where they join the Prime Minister at the head of a procession from the Commons to the House of Lords.

Although the post had existed de facto for some time before, it was legally created by the Ministers of the Crown Act 1937, which defined it as above and allocated a Cabinet Minister's salary to the Leader.