British chat about consignment (5)
I believe the answer is:
batch
'consignment' is the definition.
(I've seen this before)
'british chat about' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'about' indicates an anagram.
'chat' with letters rearranged gives 'atch'.
'b'+'atch'='BATCH'
(Other definitions for batch that I've seen before include "Production quantity" , "All the bread baked at the same time" , "Collection of items handled together" , "A number of things produced at the same time" , "Production run" .)