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I was just checking the information I have available on Continental Cercopis, and I agree that C vulnerata does look the most likely.
I did wonder whether it was C vulnerata but couldn't find the others species to compare.
I think the main confusion species are:
Cercopis intermedia and C. sanguinolenta
Thanks for these and yes, C vulnerata does look right.
Lat/Lng: 47.6989, 0.0673