The most common and most likely answer to this crossword clue is the 8 letter word UBIQUITY
I've seen this crossword clue in Financial Times
U
B
I
Q
U
I
T
Y
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 UBIQUITY mean?
UBIQUITY noun- The state or quality of being, or appearing to be, everywhere at once; actual or perceived omnipresence.
- Anything that is ubiquitous within a specified area.