Independent clergyman retired somewhere in South Bucks (4)
I believe the answer is:
iver
'somewhere in south bucks' is the definition.
(area of Buckinghamshire )
'independent clergyman retired' is the wordplay.
'independent' becomes 'i'.
'clergyman' becomes 'rev' (I've seen this before).
'retired' says the letters should be written backwards.
'rev' written backwards gives 'ver'.
'i'+'ver'='IVER'
(Other definitions for iver that I've seen before include "Buckinghamshire town" , "English village" .)