Possible Clues:

• 8 down could be one that marks the bike out from the rest
• Sounds like something from Breakfast Menu designed around top bread and butter ultimately? On Your Bike!
• Product's ID (2 words)
• Product identifier
• Breakfast report concerns musical selection from one of those figures with identity issues
• ID for software (2 words)
• Everyone in barracks has one breakfast say before 8?
• One can specifically identify eg Eastenders tune
• It may identify one of a batch of items
• Sort of killer, more unfeeling, that may be seen on your TV