Top in the administrative department (4)

I believe the answer is:

head

'top' is the definition.
(head is a kind of top)

'in the administrative department' is the wordplay.
'in' indicates a hidden word.
'HEAD' is hidden in the letters of 'the administrative department'.

(Other definitions for head that I've seen before include "Chief; promontory" , "Leader; promontory" , "River source; promontory" , "bean" , "John on board" .)

I've seen this clue in the Evening Standard.

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