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Here's another image that showing the hoverfly from a different angle http://www.flickr.com/photos/sara-garcia-hipolito/6993216964/in/photostream
Sara Garcia Hipolito
Looks good for pendulus from that angle, assuming they are the same fly, as the hind tibia appears about 2/3 pale.
My Flickr photos...
It is the same fly. Thank you for your help confirming the ID!
Lat/Lng: 54.2981, -8.1565
OS grid ref: NU996066