1. Constitutionally limited government: Both the UK and US have constitutions that limit the power of the government. In the UK, the constitution is not codified but is made up of various sources, including statute law, common law, and conventions. In the US, the constitution is codified and is the supreme law of the land. Both constitutions provide for the separation of powers and checks and balances to prevent the abuse of power by any branch of government.
2. Protection of individual rights: Both the UK and US have a tradition of protecting individual rights. In the UK, this is reflected in the Magna Carta (1215), which established the principle that no one is above the law, and the Bill of Rights (1689), which set out certain civil liberties. In the US, the Bill of Rights (1791) protects individual rights, such as freedom of speech, religion, and the press.
3. Judicial review: Both the UK and US have a system of judicial review, whereby the courts can strike down laws or executive actions that are deemed to be unconstitutional. In the UK, this power is exercised by the courts through the doctrine of parliamentary sovereignty, which holds that no parliament can bind its successors. In the US, the power of judicial review is explicitly granted to the Supreme Court by the constitution.