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Yes, it's the Essex V Small Skipper quiz again.
I'm still learning to tell these apart, so netted a couple for a closer look. Any help gladly appreciated.

Regards Kev

Hi Kev,

These are Essex Skipper (Thymelicus lineola), the antennae being diagnostic. They are mostly males. The following image is of a male Small Skipper (Thymelicus sylvestris). This clearly shows the brown underside of the antenna.
Good hunting.

Kind regards. Mark

Mark,
Thanks for the clarification and comparison image. I think I've cracked it now.

Regards Kev