Cryptic crossword clue
Go to Scotland, leaving our radical group

The most common and most likely answer to this crossword clue is the 4 plus 2 plus 4 letter word GANG OF FOUR

I've seen this crossword clue in The Times
G
A
N
G
O
F
F
O
U
R

Buddy explains!

The straight part
We know that "radical group" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case radical group = gang of four.
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.

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