[user104658]

Originally Posted by Oliver_W

And The Doctor was a man until played by Jodie Whittaker.

Britannia could be any race, really. You can't tell from the depiction, she's just an indistinct profile.

Realistically speaking though, a 2nd century depiction of a "mythical representation of Britain" is clearly going to be Northern European. There wasn't exactly much diversity 1800 years ago. Or... people. About 200 million in the entire world. Mind-boggling really, sounds so peaceful .