P1050682 Devils coachhorse type beetle

P1050682 Devils coachhorse type beetle

Observation - P1050682 Devils coachhorse type beetle. Description: Found this in my conservatory - about 18-20mm long, fast running. When approached, it curled its abdomen up, just like a devil's coach horse beetle. But doesn't look like one to me. Any ideas? The photo shows tip of the abdoment pointing straight up at

Found this in my conservatory - about 18-20mm long, fast running. When approached, it curled its abdomen up, just like a devil's coach horse beetle. But doesn't look like one to me. Any ideas? The photo shows tip of the abdoment pointing straight up at you.