"The change from the Belgravian square to the narrow street in Soho"

A street in Belgravia
Creative Commons Attribution Share AlikeA street in Belgravia - Credit: amandabhslater
  Belgravia, where Winnie Verloc’s mother kept her lodging house, is a genteel part of central London. By contrast, Soho, where the Verlocs set up shop, was (and to some degree still is) a seedy entertainment district frequented by prostitutes, pimps and shady characters.

Wardour Street, Soho
Creative Commons AttributionWardour Street, Soho - Credit: markhillary