- Parliament is made up of the House of Commons, House of Lords, and Monarch. It makes laws through acts of parliament and scrutinizes the work of the government. - Originally, the House of Lords had hereditary peers who inherited their title, but the Wakeham Commission reformed membership in 1999 to remove most hereditary peers. - Parliament debates and passes laws, enables tax collection, and examines the government's work, policies, and use of its powers through questioning and investigations.