Tanbark Borer Phymatodes testaceus
My only records of this species were all within 3 days of eachother. They came to light in my garden three nights running, with four different individuals on the last night. The paler ones bore a strong, if superficial, resemblence to Cantharidae.
Tanbark Borer Phymatodes testaceus, North Elmham (Norfolk, UK), 23rd June 2023
Tanbark Borer Phymatodes testaceus, North Elmham (Norfolk, UK), 24th June 2023
In this set of four photos the second one appears the largest but that's just because the position of its antennae and legs meant I could make a closer crop - it was in fact the smallest of the four.
4x Tanbark Borers Phymatodes testaceus, North Elmham (Norfolk, UK), 25th June 2023