I think this is Cantharis rustica as it has black head, red thorax, and bluish black elytra. Legs are mainly red with black at the bottom.
No interactions present.
Thanks for the id notes wodwo. From your advice and having looked at other pictures of Cantharis pellucida, it seems likely to be this species
Lat/Lng: 54.6459, -3.4437
OS grid ref: NY069288