Cutting off home counties raven flying around church (9)
I believe the answer is:
severance
'cutting off' is the definition.
'home counties raven flying around church' is the wordplay.
'home counties' becomes 'se'.
'flying around' is an anagram indicator.
'church' becomes 'ce' (abbreviation for Church of England).
'raven' with letters rearranged gives 'veran'.
'se'+'veran'+'ce'='SEVERANCE'
(Other definitions for severance that I've seen before include "Detachment" , "Dismissal from employment" , "split" .)