Well-informed deputy, good and honest (10)
I believe the answer is:
upstanding
'honest' is the definition.
(I've seen this before)
'well-informed deputy good' is the wordplay.
'well informed' becomes 'up' (I've seen this in other clues).
'deputy' becomes 'stand in' (I've seen this before).
'good' becomes 'g' (abbreviation).
'up'+'standin'+'g'='UPSTANDING'
'and' is the link.
(Other definitions for upstanding that I've seen before include "as we must be when the judge appears!" , "Honest, respectable; erect" , "Ready for toast" .)