ID help Calliphora sp.?

Hi, 

Please can anyone assist?

I’m used to ants but new to fly ID and trying to use the Sivell 2021 key. I have got this down to something like Calliphora uralensis or C. stelviana (not blue though?) but I'm not sure. Any help gratefully received. Photos on next post as I couldn’t get them to ‘stick’ to this one.

OK adding photos again (first post so a bit uncertain)

This looks like a Pollenia female to me. The dusting patterns normally seen  on a fresh specimen have been obscured by fats seeping on to the cuticle. If you take the fly (complete with micropin) out of the stage and drop it into some ethyl acetate for a couple of hours, that may refresh the dusting pattern. I think  I can see some residual golden hairs under the thorax. They are easily rubbed off, so an older specimen can look very different to a freshly emerged one.