Administrative capital of South Africa (8)
I believe the answer is:
pretoria
'administrative capital of south africa' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for pretoria that I've seen before include "Capital city" , "City in South Africa" , "Executive capital of South Africa" , "A ripe rot in S. Africa" , "Pirate or a South African city, strangely" .)