United Kingdom (British) Flags
The familiar design of the United Kingdom flag dates back to 1801, when a decree joined the Kingdom of Ireland and the Kingdom of Great Britain, forming the United Kingdom. Today, the distinctive flag of the United Kingdom also represents Scotland, Wales and Northern Ireland, all of which are still formally part of the Commonwealth.
The flag itself incorporates the prior national flags of all three nations. It includes the red cross (edged in white) of St George, the patron saint of England overlaid onto the Cross of St Patrick, the patron saint of Ireland. These are superimposed onto the saltire (cross of St Andrew, the patron saint of Scotland. The 1801 adoption of the Union Jack flag also marks the date when James VI of Scotland became King of England and Ireland as well.