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Some of the distinguishing features (leg colour, thorax side) don't jump out at me on these pictures. The 2nd picture, however, does seem to show an extent of black on the frons consistent with Common Darter.
It certainly isn't a Black Darter so, in that neighbourhood, there's really only Common Darter left, Ruddy Darter being supposedly out of range.
Lat/Lng: 56.0181, -2.8551
OS grid ref: NT467809