No interactions present.
Possibly a male 'Conops ceriaeformis'.
Yes, it is a very pale individual, so could be ceriaeformis. I would have expected that to be a little more yellow and to have dark ring on hind femora, but not a species I know well. Have gone for Conops alone, to be safe.
My Flickr photos...
Thanks so much for your help. I'll keep an eye out for more in case we do have C. ceriaeformis - I gather it's quite scarce.
I would say C. quadrifasciatus - the hind femur is completely orange with no thickening. Also, I would have expected greater indentation between the tergites if it was C. ceriaeformis.
Thanks to Roger for suggesting quadrifasciatus, which is what I think, really. However, I have quite a few specimens of quadrifasciatus, and this is certainly at the very palest end of the range, in terms of amount of yellow on the tergites. Conopids need close consideration...the rare Leopoldius are very similar to these Conops, as well.
Lat/Lng: 50.677, -1.5141
OS grid ref: SZ344864