Possible Clues:

• Make complaint and constable latterly will bust
• Hit bushes, perhaps catching large grouse
• Somewhat feeble attempt to complain
• Speak like 51-Across
• Beef from table cooked
• Lecturer in flap making complaint
• Cry (like a sheep?)
• Shearing music?
• Talk sheepishly?
• Cry of animal left in pound