Customs and practices of british government are derived from?

The customs and practices of the British government are derived from a variety of sources, including:

* Common law: The British legal system is based on common law, which is judge-made law that has evolved over time through court decisions. This means that many of the customs and practices of the British government are based on legal precedents.

* Statute law: The British government also enacts laws through statutes, which are Acts of Parliament. These statutes set out the legal framework for many of the government's activities.

* Royal prerogative: The British monarch also has certain prerogative powers, which are executive powers that are not subject to parliamentary approval. These powers include the power to appoint and dismiss the prime minister, and the power to declare war and make peace.

* Constitutional conventions: In addition to common law, statute law, and royal prerogative, the British government also operates according to a number of constitutional conventions. These conventions are not legally binding, but they are considered to be essential for the smooth functioning of the government. Some of the most important constitutional conventions include the principle of collective ministerial responsibility, the convention that the monarch acts on the advice of the prime minister, and the convention that the House of Commons must pass a vote of confidence in the government before it can take office.

The combination of these sources of law and convention has shaped the customs and practices of the British government over centuries. The result is a system of government that is both flexible and stable, and that has been able to adapt to changing circumstances over time.