Dope working for government department (4)
I believe the answer is:
info
'dope' is the definition.
(I've seen this before)
'working for government department' is the wordplay.
'working for' becomes 'in' (I can't explain this - if you can you should believe this answer much more).
'government department' becomes 'fo' (Foreign Office abbreviation).
'in'+'fo'='INFO'
Can you help me to learn more?
(Other definitions for info that I've seen before include "Facts; knowledge gained" , "counsel?" , "News" , "Intelligence (abbr)" , "Latest" .)