Where to shop around in a scared scamper? (7)

I believe the answer is:

arcades

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'where to shop around' is the definition.
The definition suggests a singular noun but the answer is a plural noun.

'a scared scamper?' is the wordplay.
'a scared' anagrams to 'ARCADES'.
Though, I'm not sure how this is indicated.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for arcades that I've seen before include "Covered passageway with shops and stalls" , "Colonnades" , "Arched walks" , "More than one mall" , "Covered passages with shops and stalls" .)

I've seen this clue in the Evening Standard.

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