The UK flag consists of three elements: the cross of St. George (red on white) for England, the cross of St. Andrew (white diagonal on blue) for Scotland, and the so-called cross of St. Patrick (red diagonal on white) for Ireland. The original Union Jack/Union Flag adopted in 1606 was symmetrical: the red cross of St. George outlined in white overlaid on top of a St. Andrew's flag, which was blue with a white X.
