The monarch appoints a Prime Minister, guided by the strict convention that the Prime Minister should be the member of the House of Commons most likely to be able to form a Government with the support of the House. The Prime Minister then selects the other Ministers which make up the Government and act as political heads of the various Government Departments. About twenty of the most senior government ministers make up the Cabinet.
As in other parliamentary systems of government, the executive (called "the government") is drawn from and is answerable to Parliament - a successful vote of no confidence will force the government either to resign or to seek a parliamentary dissolution and a general elections. In practice members of parliament of all major parties are strictly controlled by whips who try to ensure they vote according to party policy. If the government has a large majority, then they are very unlikely to lose enough votes to be unable to pass legislation.
более общая версия исполнительной власти для более полного ответа
The monarch appoints a Prime Minister as the head of Her Majesty's Government in the United Kingdom, guided by the strict convention that the Prime Minister should be the member of the House of Commons most likely to be able to form a Government with the support of that House. In practice, this means that the leader of the political party with an absolute majority of seats in the House of Commons is chosen to be the Prime Minister. If no party has an absolute majority, the leader of the largest party is given the first opportunity to form a coalition. The Prime Minister then selects the other Ministers which make up the Government and act as political heads of the various Government Departments. About twenty of the most senior government ministers make up the Cabinet and approximately 100 ministers in total comprise the government. In accordance with constitutional convention, all ministers within the government are either Members of Parliament or peers in the House of Lords.
As in some other parliamentary systems of government (especially those based upon the Westminster System), the executive (called "the government") is drawn from and is answerable to Parliament - a successful vote of no confidence will force the government either to resign or to seek a parliamentary dissolution and a general election. In practice, members of parliament of all major parties are strictly controlled by whips who try to ensure they vote according to party policy. If the government has a large majority, then they are very unlikely to lose enough votes to be unable to pass legislation.
The Prime Minister and the Cabinet
The Prime Minister is the most senior minister in the Cabinet. He or she is responsible for chairing Cabinet meetings, selecting Cabinet ministers (and all other positions in Her Majesty's government), and formulating government policy. The Prime Minister being the de facto leader of the UK, he or she exercises executive functions that are nominally vested in the sovereign (by way of the Royal Prerogatives). Historically, the British monarch was the sole source of executive powers in the government. However, following the lead of the Hanoverian monarchs, an arrangement of a "Prime Minister" chairing and leading the Cabinet began to emerge. Over time, this arrangement became the effective executive branch of government, as it assumed the day-to-day functioning of the British government away from the sovereign.
Theoretically, the Prime Minister is primus inter pares (,i.e. Latin for "first among equals") among their Cabinet colleagues. While the Prime Minister is the senior Cabinet Minister, they are theoretically bound to make executive decisions in a collective fashion with the other Cabinet ministers. The Cabinet, along with the PM, consists of Secretaries of State from the various government departments, the Lord High Chancellor, the Lord Privy Seal, the President of the Board of Trade, the Chancellor of the Duchy of Lancaster and Ministers without portfolio. Cabinet meetings are typically held weekly, while Parliament is in session.
Government departments and the Civil Service
The Government of the United Kingdom contains a number of ministries known mainly, though not exclusively as departments, e.g., Department for Education. These are politically led by a Government Minister who is often a Secretary of State and member of the Cabinet. He or she may also be supported by a number of junior Ministers. In practice, several government departments and Ministers have responsibilities that cover England alone, with devolved bodies having responsibility for Scotland, Wales and Northern Ireland, (for example - the Department of Health), or responsibilities that mainly focus on England (such as the Department for Education).
Implementation of the Minister's decisions is carried out by a permanent politically neutral organisation known as the civil service. Its constitutional role is to support the Government of the day regardless of which political party is in power. Unlike some other democracies, senior civil servants remain in post upon a change of Government. Administrative management of the Department is led by a head civil servant known in most Departments as a Permanent Secretary. The majority of the civil service staff in fact work in executive agencies, which are separate operational organisations reporting to Departments of State.
"Whitehall" is often used as a metonym for the central core of the Civil Service. This is because most Government Departments have headquarters in and around the former Royal Palace Whitehall.
