The most common and most likely answer to this crossword clue is the 7 letter word JERSEYS
I've seen this crossword clue in Independent
J
E
R
S
E
Y
S
Buddy explains!
The straight part
We know that "Island’s/milk suppliers/the tops" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case island’s/milk suppliers/the tops = jerseys.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does JERSEYS mean?
JERSEYS noun- A garment knitted from wool, worn over the upper body.
- A shirt worn by a member of an athletic team, usually oversized, typically depicting the athlete's name and team number as well as the team's logotype.
- A type of fabric knit