Shed somewhere in Berkshire (6)
I believe the answer is:
slough
I believe this clue is a double definition.
'shed' is the first definition.
(both can mean to cast off)
'somewhere in berkshire' is the second definition.
(town in Berkshire)
(Other definitions for slough that I've seen before include "Swamp; cast off (skin)" , "poet wanted destroyed" , "Swamp or marshy place, maybe of despond" , "Berkshire town and local authority" , "shed covering" .)