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Thanks for the ID. That explains why I couldn't get a match to a specific eupeodes!!!
Eupeodes has a very short fringe of black hairs around the margin of the abdomen...it never has long pale hairs like this. The inwardly angled rear edge to the yellow spots, leaving black triangles up the middle of the abdomen, is typical of M. auricollis, in combination with a yellow scutellum.
My Flickr photos...
Lat/Lng: 51.4435, -0.5589
OS grid ref: TQ002725