Folded wings at rest
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Thank you miked, been doing a little bit more research sins your posting while keeping the BBQ going, I'm shore you are on the right track the colouring of the one in my photos would subject it is female.
This is a female, males also start out with the brownish wings (before they darken to the blue-black colour), but only females have the white 'spots' near the wing tips.
Thank you RoyW, did not know white spot was diagnostic, that's really good.
Lat/Lng: 51.35840548659, -0.38580894470215
OS grid ref: TQ124633