The most common and most likely answer to this crossword clue is the 10 letter word PACESETTER
I've seen this crossword clue in Financial Times
P
A
C
E
S
E
T
T
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R
More clues leading to the result PACESETTER
- One who strides out helpfully, whatever Don Manley says?
- Leader with due respect to me
- Leader with due deference to me
- Quiet maestro accompanying dog and horse?
- English international returns to face me, the one out in front
- One temporarily leading talk about to stop, gutted
- Brilliant crossword creator after power as temporary leader
- A person who’s followed could be quiet and expert compiler of crosswords
- One goes to the front in a race to walk dog
- Power shown by outstanding dog, early leader in race
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 PACESETTER mean?
PACESETTER noun- A person who determines the rate of action through leading.