Possible Clues:

• With 'The,' Williams/Lane movie
• Aviary
• Robin and Pen has a hold on the Twitterati perhaps?
• Grace bid appallingly for hawkish type's home
• One prison after another for chat perhaps behind bars
• Time to lock up for a walk in London
• Singers are barred in it
• One local prison after another for chatterers behind bars
• Where Polly goes for a walk in London
• Composers, one heard, providing arrangement of bars for singer