Quiet stroll on small street in York (8)
I believe the answer is:
shambles
'street in york' is the definition.
(The Shambles is a famous street in York)
'quiet stroll on small' is the wordplay.
'quiet' becomes 'sh'.
'stroll' becomes 'amble' (synonyms).
'on' means one lot of letters go next to another.
'small' becomes 's' (abbreviation - e.g. clothes size).
'sh'+'amble'+'s'='SHAMBLES'
(Other definitions for shambles that I've seen before include "State of total disorder" , "Great mess" , "Chaotic state" , "confused situation" , "Scene of slaughter or disorder" .)