Witches attempt to find English city (8)
I believe the answer is:
coventry
'english city' is the definition.
(I've seen this before)
'witches attempt to' is the wordplay.
'witches' becomes 'coven' (a coven is a group of witches).
'attempt to' becomes 'try' (I've seen this in other clues).
'coven'+'try'='COVENTRY'
'find' acts as a link.
(Other definitions for coventry that I've seen before include "West Midlands city" , "City (for those banished from society?)" , "English city" , "Place" , "cathedral city" .)