Unionism in England possession) and Scotland was created by the Acts of Union, passed in the parliaments of both kingdoms in 1707 and 1706 respectively, which united the governments of what had previously been independent states (though they had shared the same monarch in a personal union since 1603) under the Parliament of Great Britain. The Union was brought into existence under the Acts of Union on 1 May 1707. With the Act of Union 1800, the Kingdom of Ireland united with Great Britain into what then formed the United Kingdom of Great Britain and Ireland. The history of the Unions is reflected
Constitution of the United Kingdom two Acts of Union which were passed by the Parliaments of both nations. The Treaty, along with the subsequent Acts, brought into existence the Kingdom of Great Britain, uniting the Kingdom of England and the Kingdom of Scotland. Common law legal systems exist in Northern Ireland and in England and Wales, but not in Scotland which has a hybrid system (see Scots law) which includes a great deal of Common Law. Court judgments also commonly form a source of the constitution: generally speaking in English Law, judgments of the higher courts form "precedents" or "case law" that binds lower courts