Distinctive green hue on black exoskeleton, moving relativley fast and had a closed up defensive posture when molested.
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consider Click Beetle
Interesting, because when climbing vertical up my trouser leg it suddenly propelled itself away which is a trick of the Click beetle. Thanks Brock.
The name certainly describes it aptly, as a click can be heard as it flexes its body & felt if held between the finger & thumb. The larva is called a WIREWORM, a pest of agriculture,hort. & turf.
Lat/Lng: 52.6703, -2.5498
OS grid ref: SJ629082
Very Windy but Sunny day, Specimen located at the summit walking across stoney ground with limited grass coverage.