The most common and most likely answer to this crossword clue is the 4 plus 11 letter word NEWS CONFERENCES
I've seen this crossword clue in The Times
N
E
W
S
C
O
N
F
E
R
E
N
C
E
S
Buddy explains!
The straight part
We know that "Where reporters gather" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case where reporters gather = news conferences.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.