Photo taken 29/07/23 at Ashridge, Herts.
This flies from March to October. It's quite common, but I think it often gets overlooked amongst the other White butterflies.
Photo taken 17/08/18 at Oaken Wood, Chiddingfold, Surrey
Photo taken 6/04/15 at Kensworth, Beds..
Photo taken 18/04/15 at Bix, Oxon.
Photo taken 20/07/09 near Gaddesden Row, Herts.
Photo taken 19/05/13 at Bison Hill, Whipsnade, Beds..