Confidence: I'm as sure as I can be.
Notes: The shape of the body and large flat feet are characteristic. The problem is, Which Cantharis species. With exceptions they're not a difficult group, but I think maybe yours isn't typical. I'd guess it is Cantharis rustica. Yours has black femora and red tibiae, and C. rustica usually has red femora and black tibiae. Apart from that, it looks alright for this species.