1. The Union Jack: This is the most well-known flag of Great Britain and is used to represent the United Kingdom as a whole. It is a combination of the flags of England, Scotland, and Northern Ireland.
2. The English Flag: This flag represents England and features a white cross on a red field. It is known as the Cross of St. George.
3. The Scottish Flag: This flag represents Scotland and features a white saltire (diagonal cross) on a blue field. It is known as the Saltire of St. Andrew.
4. The Welsh Flag: This flag represents Wales and features a red dragon on a white and green field. It is known as the Red Dragon of Wales.