I've been mulling this over for a while now, and tried to figure out a "nice" way to ask the question, but I can't so I"m just going to go for it.
Why the interest in the "British Black Bee"/"Apis Mellifera Mellifera"?
The people that I know here that had them aren't that sorry to see the back of them.
My bees live through winter and give me honey, in my brief time beekeeping I havent had to consider much else. Why should I, as an individual beekeeper care what their provenance is?