Purple Hairstreak Neozephyrus quercus

Two years ago, once I finally knew how to find these lovely butterflies, we saw thousands of them all over the place in Hastings, last year with all the wet weather not so many.
This year there has been a lot more, but this is the best shot I have managed.
They spend their time in Oak trees near the tops, where if you stand still and watch you see them flitting about.
This is a long shot up, and cropped but there it is...lol