Dicranotropis hamata
This was found by suction. Apparently most records of this species (certainly most photos online) are of brachypters (short-winged individuals), so it's perhaps surprising that the first one I've identified is macropterous (long-winged). It keyed to this species using the RES key but as it didn't look like the vast majority of photos I could find I wondered if I might have gone wrong. Eventually I found a couple of photos of macropters including one in the German photo guide. To make quite sure I checked the genitalia against Biedermann & Niedringhaus. I had to clear the abdomen to see the features clearly as it was quite dirty but this was sufficient to confirm. The genital scale was broken but even with one lobe broken off you could see that it would have been deeply incised had it been complete - the apex of the incision was visible.
Note that the first photo below looks like it's taken from directly above but in fact it was taken from slightly in front of the leafhopper meaning that you can see the point of the fork of the median keel of the frons. Due to the way the wings were held after death it was difficult to get an accurate measurement of its length, but it was around 4.3mm. The forewing was 3.5mm long.
female Dicranotropis hamata showing forewing, genitalia from below and genital scale (right side broken), Wendling Beck Environment Project (Norfolk, UK), 30th July 2025