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You can't be sure of the species from the image here. It could be almost any Myrmica from what we see.
Conclusion drawn from the obvious 2 segment waist, complete with apparent 'humps' on each segment as stated in the literature I have.
Still open to further suggestions though.
Exactly - that tells you the genus, not which of the dozen or so species it is. It is not all that easy to separate them even if you have one under a microscope.
Lat/Lng: 54.0556, -2.8106
OS grid ref: SD470624