The White Dragon Flag of the Angles, Saxons and Jutes and the Red Dragon Flag of the Celts came to these islands by a similar route.

The Red Dragon is the dragon of Wales and of the people of Wales (Celts). While the White Dragon, the flag of the Saxon English which, had more or less disappeared from the national scene is now making a welcome re-appearance.

The White Dragon and the Red came to these islands in the 2nd century AD when Trajan was Emperor of Rome. The Trajan wars were fought between the Romans and the tribes from the East, the border around the area that is now the Black Sea.

The White Dragon arrived with the Angle, Saxon and Jutish raiders attacking Celtic Britain during the 2nd, 3rd and 4th Centuries. These Black Sea tribes being under the influence of forces even further east and through whose territories the trade route came west from China had in various forms standards based on the dragon symbol, itself of Chinese origin.

In times past even until comparatively modern times it was the practise of the victor to take the standards of the defeated and put these standards and symbols to the victors use. On Trajan's Column, still to be seen in Rome, can be found these dragon standards. Trajan decreed that while the Eagle was to remain the symbol of the Legion the cohorts (the equivalent to modern battalions) were in future to carry the dragon as their symbol.
On a local basis the empire was controlled by the cohorts, thus the dragon symbol was to be found from Hadrian's Wall to the countries south of the Mediterranean.