Possible Clues:

• Having affected interest in visual creativity
• Perhaps Labour leader's abandoned being bohemian
• Spuriously cultured
• Like some craft show displays
• Showily imitative
• Pretentiously cultural, but not at first social
• Bohemian function's not quiet
• Pretentious, maybe
• Pretentious salver, almost entirely overturned?
• Aesthetic, to a fault