(Again: there are orders of magnitude more such subgroups of Britain than there are cells in the human body. I don't understand how you pick one to the exclusion of all others.)
However, why are you arguing against...
I'm arguing nothing - I merely asked why CJefferson found a lack of non-royal women on money unacceptable. Then I asked drcongo (and later you and aaren) about your underlying political/moral philosophy. But everyone seems to be ducking the fundamental question.
So I'll ask one more time before I give up. Consider a statistical reference class X, which suffers disproportionately from one or more harms. How do I determine whether X deserves moral/political consideration of the sort you are advocating for? (E.g., we should make sure more of X has their picture printed on money.)