Possible Clues:

• Lawrence Walker, cine-producer, looking good on the box
• Neglect that's designed to be appealing on box
• Youngster in charge carries on appealing to viewers
• Awfully nice, seen on wings of theatre stage, and nice on screen too
• Entice agitated member to enter, having broadcast appeal
• Projecting well out of the box
• Looking good on the tube
• Looking good in set pieces?
• roducing positive effect with box camera
• Coming over on the tube line, get niece travelling