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The position of the cross-lines on the wings doesn't look quite right to me for C. bistriga, but I'm struggling to come up with an alternative! Could it be Acrobasis consociella, and the angle of the photo is making it look odd?
If you have any other photos from different angles that would be helpful.
Entomologist and biological recorder
Lat/Lng: 51.3874, -0.154
OS grid ref: TQ285669