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You have a question mark at the top, yet are as sure as you can be!
It is impossible to get to species (genus even?) without a better photo of bristles on legs and so on.
My Flickr photos...
Apologies, just assumed it would be corrected.
Actually I couldn't find greenbottle on the ID list to give a scientific notation, so worked from caesar backwards!
Lovely metallic green fly nonetheless :-) !
Lat/Lng: 53.2, -2.6
OS grid ref: SJ6675