Could this be a great Oak Beauty or a Pale Oak Beauty?
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Looks like a very worn Willow Beauty to me and the flight time is a bit late for both GOB and POB.
I agree, would you like to add that as an identification?
Entomologist and biological recorder
Would really need to see the underside to rule out Mottled Beauty.
Sometimes you just have to let go :-)
Thank you both. Next time I'll get photos of the underside!
Lat/Lng: 52.9309, -1.4966
OS grid ref: SK339371