Clearly, the woods with the highest populations present the best chance of registering the last sightings; these are Knepp Farm Estate and Fermyn Woods. However, I get the impression that nobody is looking there now, which is a pity. The best wood by far in Upper Thames region [37 in 105 mins on July 20th] was visited this afternoon. I really went to look for eggs/larvae, but in a 90 minute search I was unsuccessful. As I left, I looked up at the big Oaks at the highest point and noticed what must have been a male gliding close to the foliage near the crowns, landing frequently. I waited there for 10 minutes watching this behaviour: I wanted to be sure of this sighting.
I hope some of you can get to Knepp, Fermyn, or Alice Holt during the next few days: it would be interesting to record when the season is over.