Bembidion quadrimaculatum
The contrast between the paler first four segments of the antennae and the darker fifth onwards was more obvious when examining the insect after death than it is in the photos of the live insect.
Bembidion quadrimaculatum showing hunmeral and pronotal angles and antenna, North Elmham (Norfolk, UK), 5th September 2023
Bembidion quadrimaculatum, North Elmham (Norfolk, UK), 24th March 2020
Bembidion quadrimaculatum showing pronotum, North Elmham (Norfolk, UK), 22nd January 2021
Bembidion quadrimaculatum, North Elmham (Norfolk, UK), 28th February 2021