Opposition politicians in Norway tucked into the cod prepared with wasabi (6,7)
I believe the answer is:
shadow cabinet
'opposition politicians' is the definition.
(I've seen this before)
'norway tucked into the cod prepared with wasabi' is the wordplay.
'norway' becomes 'n'.
'tucked into' indicates putting letters inside.
'prepared with' is an anagram indicator.
'the'+'cod'='thecod'
'thecod' mixed up with 'wasabi' can make 'shadowcabiet'.
'n' inserted within 'shadowcabiet' is 'SHADOW CABINET'.
'in' is the link.
(Other definitions for shadow cabinet that I've seen before include "Senior members of the opposition" , "Policy-making group of opposition party" , "Opposition front bench" , "leading members of the opposition" , "Top opposition members" .)