The term is not used in English law, however you are considered an adult for most purposes if you marry and/or leave full time non-advanced education.
The United Kingdom was formed as a single state on the 1st January 1801
It is the shortened form of The 'United Kingdom'
It stands for the United Kingdom - which is short for The United Kingdom of Great Britain and Northern Ireland.
if you where legitamly born in the UK then then you don't need to do anything as it will state on your birth certifacate if you have lost this then you need to go to the registy office where you was...