Found at Soussons, Dartmoor
No interactions present.
It could be O. viridulis but in the image, it looks to me as if the wings are protruding beyond the abdomen. I gather that is more a feature of the Field Grasshopper, Chorthippus brunneus, which has green variants.
See my observation at www.ispot.org.uk/node/90317 of a green Field Grasshopper. You will see that the side keels of the pronotum are much more strongly angled.
Lat/Lng: 50.6116, -3.8638
OS grid ref: SX682807