Access given to the French ambassador (6)
I believe the answer is:
legate
'ambassador' is the definition.
(I've seen this before)
'access given to the french' is the wordplay.
'access' becomes 'gate' (I've seen this in other clues).
'given to' means one lot of letters go next to another.
'the french' becomes 'le'.
'gate' put after 'le' is 'LEGATE'.
(Other definitions for legate that I've seen before include "Envoy representing the Pope" , "One being tested" , "Emissary representing the Pope" , "Late, eg. for the papal representative" , "Envoy - pope's representative" .)