We have a couple of Buddleia bushes growing on the bank outside our kitchen window. They got a bit singed in the fire but seemed to be recovering quite well. I was however very surprised to find them flowering recently.
I don't know if the local butterflies were surprised or not, but they are getting stuck in to the flowers. One of the vernacular name for this genus of flower is Butterfly Bush.
I think the first 2 images are of Meadow Argus..