UK decried broken down supplier (5,4)
I believe the answer is:
eider duck
'down supplier' is the definition.
(down can mean duck feathers)
'uk decried broken' is the wordplay.
'broken' is an anagram indicator.
'uk'+'decried'='ukdecried'
'ukdecried' anagrammed gives 'EIDER DUCK'.
(Other definitions for eider duck that I've seen before include "Source of soft feathers" , "A northern sea bird" , "down supplier" .)