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It could be, but could it also be Eristalis intricarius (black form, a stigma on its wing(Plate 11, 4a in Stubbs and Falk)?
If you look at the venation on the wings, it lacks the looped vein characteristic of Eristalis. The lack of that loop rules out Merodon, too.
My Flickr photos...
Are cuckoo bumblebees active on this site?
I assume you mean North Newbald YWT, rather than iSpot!
I cannot comment, as I rarely visit the site, and am not looking for bees, anyway, when there.
I am saving bees for the future!
Lat/Lng: 53.82224, -0.60701
OS grid ref: SE917371