Is this a fly or a wasp, an ichneuomon perhaps? It was about an inch long.
No interactions present.
Are so called because the male has a pair of coiled claspers for mating, and they give a sort of scorpion-like appearance.
Quite harmless, eating dead invertebrates. They sometimes rob spiders' webs.
Apparently, the male usually presents food to his mate, otherwise she may choose him for her post-coital snack.
Prehistoric species were amongst the first insect plant-pollinators.
Thank you so much for your quick responses - I had no idea! It is a pretty fly but flew away before I could take more photos. Thanks again.
Lat/Lng: 51.5171, -3.2457
OS grid ref: ST136805