Been to Mill Hill nature reserve on the South Downs near Shoreham-by-Sea in West Sussex.
Wanted to find the Wall Brown (Lasiommata megera) there, which apparently may still linger in that place, despite a widespread extinction in Southern England in the last decades. Didn’t see any =(
Anyway, it is a very nice chalk downland location, with plenty of wildlife — although it is a bit more popular with dog walkers than I prefer.
Heard (not seen, but pretty sure about it, I am very familiar with the species) a Wart-biter (Decticus verrucivorus), never met with this big guy in Britain before, it is ridiculously rare here!
Lots of butterflies at the place.
Hemp Agrimony (Eupatorium cannabinum) is the number one butterfly attraction. Painted Lady (Vanessa cardui) agrees: