Easy like Sunday morning...

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Across
  1. 3. A fashion designer’s book
  2. 4. Labour’s result is cause of annual celebration
  3. 5. Type of Tudor beer
  4. 9. Often said with a smile
  5. 13. Reverse disapproval
  6. 14. Joining the word after ampers shortens to
  7. 15. “Give me a woman who loves ____ and I will conquer the world” (Kaiser Wilhelm)
  8. 16. Annualised duration of 17th century Central European conflict
Down
  1. 1. Camera lens function
  2. 2. What is always running, but has no legs?
  3. 5. How many Roman vicars are without vehicles?
  4. 6. What do the cat and the rat have in common?
  5. 7. It will all end in tiers
  6. 8. Constitutional setup of America
  7. 10. After three, without you
  8. 11. Cheerful dwarf
  9. 12. Encounter a gathering of hunters (Or: overturn the overflow)
  10. 17. Take the first section out of wrongdoing
  11. 18. Warm English beverage is put before a man