I have only one, called Bluecrop and it had berries this year, until a
branch blew off a tree and smashed it and container. It's recovering now but
still looks a bit miffed



There's at least one blueberry that self-pollinates - that's the reason I
bought mine, unfortunately I can't remember it's name :-(

I've got 2 plants that have cropped heavily for the past 6 years.
They both set fruit this year about 2 weeks ago (and that's in the NE of
England!)
Perhaps you've got the same type as me?

Jeff