The Union Flag was also used as the official flag of several British colonies and dominions before they adopted their own national flags. Although no law has been passed making the Union Flag the official national flag of the United Kingdom, it has effectively become such through precedent. The Union Jack, or Union Flag, is the de facto national flag of the United Kingdom. ġ707 (First version was officially adopted.), 1 January 1801 222 years ago ( ) (current version with St Patrick's Cross)īlue field on which the Cross of Saint Andrew counterchanged with the Cross of Saint Patrick, over all the Cross of Saint George fimbriated. For other uses, see Union flag (disambiguation) and Union Jack (disambiguation).ĥ:3, commonly flown on land and 2:1, commonly flown at sea.
