Looks yummy Seraph! American desserts are the BEST!
Yeah, I've seen LOTS of wild blackberry in England too. For some reason nobody bothers to pick it, maybe they see it as a weed too. But I picked some once and made a pie for when I had some people over. They just thought I was a bit eccentric to pic the Blackberries myself instead of buying them in the shop. Ironically they were growing closer to my house than the nearest grocery shop.

In England they grow blueberries in greenhouses (while the Swedish ones are from the forest). The English ones are the size of a rasberry.... three times the size of the Swedish bluberries but with a blander taste. They look like monsters!