Sorry for poor photograph. Approximately 10mm in length. Appears black.
No interactions present.
It is not a Noon-fly. Maybe Calliphora or Polietes or something else altogether. The picture is not good enough to tell.
Thanks for the information I'll just have to keep looking out for the Noon fly!
Lat/Lng: 56.8, -5.1
OS grid ref: NN1476