The answer is both old and new. Graham Bartram, of the Flag Institute, said: "The Welsh flag we know today - a large red dragon on a white and green background - only came into being in 1959.
He said flying the UK flag displayed a lack of respect towards Welsh culture. Shire Hall said it had been following UK government guidelines but was now flying the Red Dragon "after feedback and ...
The Welsh kings of Aberffraw used the emblem to symbolise their authority in the early fifth century. The name Pendragon, or Pen Draig, has its origins in these battle standards.