Right Charlie brought in by a junior minister (8)
I believe the answer is:
accurate
'right' is the definition.
(similar in meaning)
'charlie brought in by a junior minister' is the wordplay.
'charlie' becomes 'C' (phonetic alphabet).
'brought in by' indicates putting letters inside.
'junior minister' becomes 'curate'.
'a'+'curate'='acurate'
'c' inserted into 'acurate' is 'ACCURATE'.
(Other definitions for accurate that I've seen before include "Correct in all details" , "Exactly right" , "strict" , "Factual" , "Spot on" .)