Related Clues:

• Amaze head of school with union backing
• Heads raised in shock
• Overcome by today's leader in newspaper
• Shock! Heads of State turning up naked!
• Shock caused by teachers' union's uprising
• Potty tipped over 1
• 'Mad Men' is retro knock out!
• Knock out, turning crazy
• Overheads 14 (part 1)
• Knock down - planking
• Base of room - storey
• Storey
• Shock into silence
• Bottom of the ocean
• Taser, say