Saturday’s cryptic 2

Across: 1ac & 12dn. Corporal punishment, 5. Abel, 8. Milky way, 10. Feat, 11. ESP, 13. Addle, 14. U-boat, 15. Denims, 17. Hissed, 19. Ousts, 20. Heron, 22. Key, 24. Used, 25. Molehill, 26. Ergo, 27. Slithery.

Down: 1. Command module, 2. Ruled, 3. Oxygen mask, 4. Lays, 6. Bretons, 7. Latitudinally, 9. Aeon, 16. Nest egg, 18. Mayo, 21. Raise, 23. Emus.