The Constitution of the United Kingdom of Great Britain and Northern Ireland consists of almost 300 legal acts, that is, no single document, which is the Constitution of the country.

It is known that the Constitution as the fundamental law of the country, set ups framework for legislation, it determines the rights and obligations of the state and society. Countries such as the United Kingdom, Israel and New Zealand do not have a single document as the Constitution, instead they have a set of laws and customs. Amendments to any of these documents is estimated as changes to the Constitution.