The most common and most likely answer to this crossword clue is the 3 letter word YON
Y
O
N
Buddy explains!
The straight part
We know that "Those Scots" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case those scots = yon.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 YON mean?
YON adjective- That (thing) over there; of something distant, but within sight.
- Yonder.
- That one or those over there.