Helpful information by cable (4)

I believe the answer is:

lead

I believe this clue is a double definition.

'helpful information' is the first definition.
(I've seen this in another clue)

'cable' is the second definition.
(thesaurus)

'by' is the link.

(Other definitions for lead that I've seen before include "Guide; metallic element" , "Metal -- Pb" , "first guitarist" , "Precede; element" , "One with starring role" .)

I've seen this clue in the Evening Standard.

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