Across

• 1. Erotic papa in frenzied gratitude. (12)
• 9. Rower, occasionally good natured, more often sambaing! (7)
• 10. Love asking top 10 things made of grass seeds? (5)
• 11. Old lover, strange non-pet and I join forces more and more quickly. (13)
• 12. Australian cattle dog is therapist I hear? (6)
• 14. Danger-cure surounds hospital. (6)
• 16. Residence of British Royals and wild ancestors in ruins. (13)
• 18. About as large as tomato sauce... (5)
• 19. Paper sculpture of alternative imagination returned after losing land. (7)
• 20. Prepare to pop under unbearable pressure. (12)

Down

• 2. Equipment damaged rain apparel... AH! (13)
• 3. Noodles? Right... absolutely! (5)
• 4. Dog like Nina back in empty cage. (6)
• 5. Put an end to second-rate oil mixed in ash. (7)
• 6. Academics manipulate ant's cellulite? (13)
• 7. Natural ingredients of shiny content. (12)
• 8. Entirely unaware of where tension is twisted. (12)
• 13. Strange sect has missed first and last holy rapture! (7)
• 15. Operatic vocal style is o-so occasionally lipread in reverse. (6)
• 17. French farewell European Union after mishandled aid. (5)