Business trouble (7)

I believe the answer is:

concern

I believe this is a double definition.

'business' is the first definition.
(eg 'none of your concern', 'none of your business')

'trouble' is the second definition.
(I've seen this in another clue)

(Other definitions for concern that I've seen before include "Relate to; anxiety" , "Relate to; care" , "Disquiet" , "Cause of anxiety" , "Affect; solicitude" .)

I've seen this clue in The Telegraph, The Times and The Sunday Times.

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