It's the oldest continuously used flag in the world
The flag's design is based on the merging of three flags: England , Scotland and Ireland
The flag's name 'Union Jack' doesn't appear in any official document
The flag's design has changed slightly over time.
Red represents valor, white signifies peace, and blue symbolizes truth.
The flag is flown on all government buildings in the United Kingdom
The flag is often used to represent England in international sporting events
The flag is sometimes flown upside down as a distress signal.
The flag is a popular tourist souvenir
The flag is a symbol of national pride for many Britons