The most common and most likely answer to this crossword clue is the 4 letter word MART
I've seen this crossword clue in The Daily Telegraph
M
A
R
T
Buddy explains!
The straight part
We know that "business area" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case business area = mart.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 MART mean?
MART noun- A market.
- A bargain.
- To buy or sell in, or as in a mart.
- To traffic.
- A license to pass the limits of a jurisdiction, or boundary of a country, for the purpose of making reprisals; a letter of marque.
- A brand or make of a manufactured product, especially of a motor car (in contradistinction to a model).
- A ship commissioned for making captures.
- Battle; contest.