Great Britain is a parliamentary monarchy. It means that there is a Queen (or King) and the Parliament. The Queen has almost no power in the country. Her powers are limited by the Parliament. The Queen is only a formal ruler. In fact everything that she does is done on the active of her ministers.The British Parliament consists of two cambers: the House if Lords and the House of Commons. There are more than 1000 members in the House of Lords. Many seats are hereditary. The House of Commons has 635 members. In Great Britain there are three main political parties: the Conservatives, the Labour Party and the Liberals.