Official who's often up the pole? (8)
I believe the answer is:
linesman
I believe this clue is a double definition.
'official' is the first definition.
(linesman is a kind of official)
'who's often up the pole?' is the second definition.
(person maintaining telephone lines)
(Other definitions for linesman that I've seen before include "Official helping referee - telephone repairer" , "Male official with a flag" , "park official" , "Football official" , "Referee's assistant" .)