Who needs air con?

Obviously this factory does!
Went for a walk in the very oppressive heat to check on the hedgerow where I usually gather Mirabelle plums. Was disappointed to find that although there was loads of blossom in the Spring, I could only find about a dozen plums. Most of the bushes were bare.
I looked behind the large hedge, which backs onto industrial units, and saw these monsters. Looks like something from outer space.