Cantharis livida
There is a dark form of this species (var. rufipes) which has black elytra, but I'm yet to come across that. This species sometimes comes to light though I've had slightly more records during the daytime.
Cantharis livida, Wendling Beck Environment Project (Norfolk, UK), 14th May 2022
Cantharis livida, North Elmham Cathedral Meadows (Norfolk, UK), 2nd June 2021
female Cantharis livida, Wendling Beck Environment Project (Norfolk, UK), 23rd May 2023
male Cantharis livida showing genital capsule, North Elmham (Norfolk, UK), 21st May 2020
Cantharis livida, North Elmham Cathedral Meadows (Norfolk, UK), 25th May 2019
Cantharis livida, North Elmham (Norfolk, UK), 17th May 2022
Cantharis livida, North Elmham (Norfolk, UK), 21st May 2023
Cantharis livida, North Elmham (Norfolk, UK), 25th May 2023
Cantharis livida, North Elmham Cathedral Meadows (Norfolk, UK), 3rd June 2022
Cantharis livida, North Elmham Cathedral Meadows (Norfolk, UK), 8th May 2020
Cantharis livida, North Elmham Cathedral Meadows (Norfolk, UK), 6th June 2018
Cantharis livida, North Elmham Cathedral Meadows (Norfolk, UK), 28th May 2018
Cantharis livida, North Elmham Cathedral Meadows (Norfolk, UK), 27th May 2020
Cantharis livida, North Elmham Cathedral Meadows (Norfolk, UK), 3rd June 2018