Strolls on quiet street in York (8)
I believe the answer is:
shambles
'street in york' is the definition.
(The Shambles is a famous street in York)
'strolls on quiet' is the wordplay.
'strolls' becomes 'ambles' ('amble' can be a synonym of 'stroll').
'on' means one lot of letters go next to another.
'quiet' becomes 'sh' (both can be said to tell someone to be quiet).
'ambles' put after 'sh' is 'SHAMBLES'.
(Other definitions for shambles that I've seen before include "Mediaeval street in York" , "State of total disorder" , "confused situation" , "Chaotic state" , "Scene of slaughter or disorder" .)