Meadow Grasshopper Chorthippus parallelus
In the same genus as the field grasshopper, the species has numerous colour forms. I found these on the dry, open area of Decoy Heath on 11 July.
Based on wing length, I believe these are males.
Olympus EM-1 (aperture priority), Olympus 4/3 x2 TC, Olympus 4/3 50mm f2 macro, f8, f10 or f11, hand-held.
The stereos are crosseye.