Potato Blight   - latin name Phytophthora infestans – has hit the unprotected shoots of
the King Edward potatoes.

This is serious because the King Edwards are a main crop potato and have not yet bulked up to produce the yield of potatoes required to take us through the winter.

New shoots have grown since the last protective blight spray was applied.  So the new shoots were unprotected and have been attacked by the potato blight fungus.