Day-flying Burnet moth with 5 spots on each forewing.
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ophrys, thanks, I didn't know there was an option to identify it as two species! Apparently, if it's trifolii, it would be exceptional for Kent.
Doubtless you are right; but, who knows, this one could be the exception!
My Flickr photos...
Lat/Lng: 51.39174, 0.06151
OS grid ref: TQ435678
In a meadow area.