No interactions present.
or member of the Diptera, as you probably know. It looks like Musca domestica (house fly), but I'm not confident, as unfortunately, there are lots of them in the UK!
Great shot, by the way!
Thanks for that - was laid up in the summer after a knee op, so sat in the garden taking macro pictures of anything that landed nearby :-)
See similar picture listed as Common Flesh Fly
Sarcophaga Camaria or close relative.
Lat/Lng: 51.4, -2.8
OS grid ref: ST4676