The most common and most likely answer to this crossword clue is the 7 letter word ANONYMS
I've seen this crossword clue in The Guardian
A
N
O
N
Y
M
S
More clues leading to the result ANONYMS
Buddy explains!

The straight part
We know that "Paul and Screw, perhaps" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case paul and screw, perhaps = anonyms.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 ANONYMS mean?
ANONYMS noun- An anonymous person.
- An assumed or false name; a pseudonym.
- A mere name; a name resting upon no diagnosis or other recognized basis.