Writer's bed found in Home Counties (6)
I believe the answer is:
scribe
'writer's' is the definition.
(scribe is a kind of writer)
'bed found in home counties' is the wordplay.
'bed' becomes 'crib' (I've seen this before).
'found in' indicates putting letters inside.
'home counties' becomes 'se'.
'crib' put into 'se' is 'SCRIBE'.
(Other definitions for scribe that I've seen before include "Scholar of Jewish law" , "Copyist; Jewish scholar once" , "A writer of old" , "Professional writer" , "One copied documents before the invention of printing" .)