Just wandering around on various plants
No interactions present.
Having an accurate measurement of the length is very helpful for identifying soldier beetles, and if you have any shots showing a side view that would also be useful. I'm pretty sure this is Cantharis nigricans though.
"Just wandering around on various plants" is a good description of the habitat preferences, or lack of them, for this omnivorous beetle!
Entomologist and biological recorder
Lat/Lng: 51.7, -1.3
OS grid ref: SP4902