Possible Clues:

• Shops show work by the setter retrospectively
• Ransacked in Roma: pie shops
• English politician beginning to organise broadcast about stores
• Big retail stores
• Sets up broadcast operation with guys, for most part, from Trading Places
• Parking in perfect European city, turning left for shops
• Parking over space at the front, show around shops
• Parking in great city around shops
• Opera I’m composing for trading centres
• Big box stores, e.g