The most common and most likely answer to this crossword clue is the 12 letter word STEEPLEJACKS
I've seen this crossword clue in Financial Times
S
T
E
E
P
L
E
J
A
C
K
S
Buddy explains!

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 STEEPLEJACKS mean?
STEEPLEJACKS noun- A person whose job involves climbing tall structures like steeples in order to make repairs.