Possible Clues:

• Have breakfast, as all the king's horses and men did (2,2,4,2,2,3)
• Old slogan urging Labour folk to get cracking! (2,2,4,2,2,3)
• What Faberge often did for classic advertising slogan (2,2,4,2,2,3)
• Old advertising slogan for breakfast food (2,2,4,2,2,3)