March up and down a row of shops (6)
I believe the answer is:
parade
This clue is a double definition.
'march up and down' is the first definition.
(parade can mean to march around)
'a row of shops' is the second definition.
(I've seen this before)
(Other definitions for parade that I've seen before include "Flaunt; ceremonial march" , "Public walk or march" , "March past" , "'Procession of bands, floats, etc (6)'" , "Promenade" .)