Invoice north-west town, we're told, for fruit (8)
I believe the answer is:
bilberry
'fruit' is the definition.
(bilberry is a kind of fruit)
'invoice north-west town we're told' is the wordplay.
'invoice' becomes 'bil' (I can't explain this - if you can you should believe this answer much more).
'north-west town' becomes 'bury'.
'we're told' indicates a 'sounds like' (homophone) clue.
'bury' is a homophone of 'berry'.
'bil'+'berry'='BILBERRY'
'for' is the link.
Can you help me to learn more?
(Other definitions for bilberry that I've seen before include "Edible fruit" , "Hardy shrub with red flowers and blue fruit" , "Fruit; rib Beryl (anag)" , "Fruit growing on moorland" .)