Head of finance (7)

I believe the answer is:

capital

This clue is a double definition.

'head' is the first definition.
(thesaurus)

'finance' is the second definition.
(thesaurus)

'of' acts as a link.

(Other definitions for capital that I've seen before include "Wellington, say" , "Havana, say" , "source of profit" , "Funds" , "Money available to produce interest" .)

I've seen this clue in the Evening Standard.

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