There are small Northern Crescent butterflies everywhere! I stand in the garden and see a dozen in the air or on flowers around me. It's probably our most common butterfly now, and it's bright coloured to boot.
For a time these two were literally bumping into each other as they moved from bloom to bloom. And you get a good look at the red spots on the underwing of the White Admiral here. My butterfly guide proposes the name Red-spotted Admiral for both of these considered as a single species.