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I think this is Ground-ivy, Glechoma hederacea and not Pyramid Bugle. Flowers appear to be along the stems arising from the leaf axils, not forming a spike above the foliage.
Not sure from the photo but think this is the case.
Many thanks for the clarification. I found a photo of Bugle I had taken a few years ago and the difference was marked. Wasn't at all clear using the ID Book though.
Lat/Lng: 53.3, -1.3
OS grid ref: SK4982