Most of circuit taking in English and French city (5)
I believe the answer is:
rouen
'french city' is the definition.
(I've seen this before)
'most of circuit taking in english' is the wordplay.
'most of' means to remove the last letter.
'circuit' becomes 'round' ('round' can be a synonym of 'circuit').
'taking' indicates putting letters inside.
'in english' becomes 'e' (abbreviation. I am not sure about the 'in' bit.**).
'round' with its last letter removed is 'roun'.
'roun' placed around 'e' is 'ROUEN'.
'and' is the link.
(Other definitions for rouen that I've seen before include "French city where Joan of Arc was burned" , "Port on river Seine" , "French cathedral city" , "French port" , "French community" .)