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This is Ecdyonurus rather than Heptagenia. Heptagenia has striped tails. The other seperating feature is extensions from the rear corners of the pronotum (body section directly behind the head) which are just visible in the photo.
I'm afraid I was being a bit too cocky on Friday night\Saturday morning.The lesson is less Whiskey and more lookin'!!!Apologies Isg69 and thanks for putting me right Inopinatus.
Lat/Lng: 53.2275, -1.4694
OS grid ref: SK355701