Officer's servant gets round transport provider (7)
I believe the answer is:
boatman
'transport provider' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'officer's servant gets round' is the wordplay.
'officer's servant' becomes 'batman' (I've seen this before).
'gets' indicates putting letters inside (gets can mean captures or absorbs).
'round' becomes 'o' (round can mean a round object).
'batman' going around 'o' is 'BOATMAN'.
Can you help me to learn more?
(Other definitions for boatman that I've seen before include "One having row with" , "Water transport provider" , "Rower - bargee" , "George - or Harris, maybe" , "Sailor" .)