A sunny but not particularly warm day, +17° C. Been to Mill Hill nature reserve near Shoreham-by-Sea, in West Sussex. I have serious concerns that the place may pretty soon drown in dog shit 
Wall Browns (Lasiommata megera) are flying, although in lower numbers than last year — but are absolutely impossible to photo.
Gold-fringed Mason Bee (Osmia aurulenta), a mainly coastal species in Britain:
Dingy Skippers (Erynnis tages) are quite common:
A fairly nice day, +18° C. Went to Shoreham-by-Sea.
Lots of Small Heaths (Coenonympha pamphilus) on the grassland:
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:
Vlad Proklov's wildlife blog 