Possible Clues:

• British network, with 'the'
• Auntie's book on queen, perhaps
• UK broadcaster (informal)
• 89-Down nickname, with 'the'
• It does broadcasts live, back-to-back
• Telly watchers' network, with "the"
• Auntie's complaint cut short bishop
• Telly network
• Network for telly watchers, informally
• British TV network, with 'the'