No interactions present.
At first I thought it might have been a small metallic green sawfly but the head was all wrong for that.
The tiny discal cell, visible just above the abdomen in both pictures, is a pointer towards one of the Stratiomyiidae (Soldierflies).
My Flickr photos...
Lat/Lng: 55.1226, -6.0788
OS grid ref: NW400885