Common Red Soldier Beetle - Rhagonycha fulva;
Rhagonycha fulva measures 8–10 millimetres (0.31–0.39 in) in length. Its antennae are black, occasionally the first segment is orange. The head and pronotum are orange and shiny, with fine pubescence visible on the head. The shape of the pronotum is variable, but it narrows towards the head. The elytra cover the wings and most of the abdomen and are a dark, shiny red in colour, and terminate in a clearly visible black patch on the apical end - this is one of their key identifying features. Its femora and tibiae are orange, but the tarsi are black; the third segment of the tarsi is simple rather than bilobed.
https://www.naturespot.org.uk/species/common-red-soldier-beetle