The shot of the rear end is not very good, but might help in ID.
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The wing veins show it is not a hoverfly. All Syrphids have a false margin created by veins parallel to the margin, and a false vein (a thickening in the membrane). Look at any Eristalis or Syrphus to see what I mean.
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
Lat/Lng: 50.71619, -1.75551
OS grid ref: SZ173907