Consignment of French uniform (8)
I believe the answer is:
delivery
'consignment' is the definition.
(I've seen this before)
'of french uniform' is the wordplay.
'of french' becomes 'de' ('of' in French).
'uniform' becomes 'livery' (livery is a type of formal uniform).
'de'+'livery'='DELIVERY'
(Other definitions for delivery that I've seen before include "Address" , "that might take 3-5 days" , "Act of giving birth" , "useful service for the housebound" , "Throw of a cricket ball" .)