The —, group of chalk stacks in the English Channel off the coast of the Isle of Wight (7)

I believe the answer is:

needles

(Other definitions for needles that I've seen before include "Isle of Wight feature - irritates" , "Feature of Christmas trees" , "Heckles" , "Christmas tree leaves" , "landmark" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.