Digression following home counties coast (7)
I believe the answer is:
seaside
'coast' is the definition.
(I know that seaside is a type of coast)
'digression following home counties' is the wordplay.
'digression' becomes 'aside' (synonyms).
'following' is a charade indicator (letters next to each other).
'home counties' becomes 'se' (Home Counties in the South East of England).
'aside' put after 'se' is 'SEASIDE'.
(Other definitions for seaside that I've seen before include "A place on the coast" , "Coastal region" , "Coastal area" , "Shoreline" , "Popular resort area" .)