Adkins accepts help in the capital (8)
I believe the answer is:
adelaide
'capital' is the definition.
(state capital of South Australia)
'adkins accepts help' is the wordplay.
'adkins' becomes 'adele' (I am not sure about this - if you are sure you should believe this answer much more).
'accepts' means one lot of letters goes inside another.
'help' becomes 'aid' (synonyms).
'adele' enclosing 'aid' is 'ADELAIDE'.
'in the' is the link.
Can you help me to learn more?
(Other definitions for adelaide that I've seen before include "where there was recently a test" , "Australian city named for William IV's queen" , "Girl" , "State capital of South Australia" , "cook turkey on the barbie here?" .)