Cut off brewer’s cart reversing in naval establishment (8)
I believe the answer is:
dockyard
'naval establishment' is the definition.
(I've seen this before)
'cut off brewer's cart reversing' is the wordplay.
'cut off' becomes 'dock' (dock can mean to cut or remove).
'brewer's cart' becomes 'dray' (I've seen this before).
'reversing' is a reversal indicator.
'dray' in reverse letter order is 'yard'.
'dock'+'yard'='DOCKYARD'
'in' acts as a link.
(Other definitions for dockyard that I've seen before include "Base for ships" , "Ship maintenance area" , "Where does one export" , "naval establishment" , "Quayside" .)