Bypass that is expanded in Home Counties, with parking (8)
I believe the answer is:
sidestep
'bypass' is the definition.
(thesaurus)
'expanded in home counties with parking' is the wordplay.
'expanded' becomes 'idest' (I can't justify this - if you can you should believe this answer much more).
'in' means one lot of letters goes inside another.
'home counties' becomes 'SE' (the Home Counties are in the South East of England).
'with' says to put letters next to each other.
'parking' becomes 'p' (abbreviation on road signs).
'idest' placed inside 'se' is 'sideste'.
'sideste'+'p'='SIDESTEP'
'that is' is the link.
Can you help me to learn more?
(Other definitions for sidestep that I've seen before include "Dodge (an issue?)" , "To avoid" , "Find a way round" , "Shift to right or left" , "Dodge - circumvent" .)