It's been an invasion year for this species with several sightings mainly down the UK east coast. Fortunately one has been hanging around buddleia bushes at the RSPB reserve at Pulbrough.
Today (25th August) I visited this site from 10 o'clock but no sign during the warm and sunny morning. Quite a few Red Admirals, a couple of Painted Ladys and Hummingbird Hawkmoths, Peacock, Comma and even a Brown Argus. I went away for lunch and on my return there it was feeding on the Buddleia. Excellent view but no pictures as my battery had run flat. Another excellent UK tick.