Flag of Great Britain - Union Jack, also known as the Union flag

Flag of Great Britain - Union Jack, also known as the Union flag Flag of England The national flag of England is a white cloth with a red straight cross of St. George, who is considered the patron saint of the English. The official proportions of the flag are 3:5, the width of the red cross lines is 1/5 of the width of the canvas. The first mention of the flag of England with the St. George&Cross dates back to 1545. The Cross of St. George is one of the first known emblems of England. It became an English symbol in the Middle Ages, during the Crusades.