Across

• 1. Top utopian is misguided to some extent. (10)
• 8. Guineans; excited and optimistic. (8)
• 9. Accomplishment in cafe atlas. (4)
• 10. Heap oil over Shakespearean damsel (7)
• 11. Dread what's in gang's togas. (5)
• 13. Nervous that one would finally get cut short. (6)
• 14. Vent store? (6)
• 15. Top secret duty revolving around learning. (5)
• 16. Kills one disemboweled dove in illegal position. (7)
• 18. Formerly held icon/celeb. (4)
• 19. Nike team synthesised horse tranquillizer. (8)
• 20. Necessities for travelling silent seas? (10)

Down

• 2. Designed phase deviously for extreme stubbornness (13)
• 3. Rusted ring had eleven-sided buckles. (8)
• 4. Top player regarding unknown game (4)
• 5. Extremely small, cool, limited, forged mails (13)
• 6. Otherworldly alien scanned Trent! (12)
• 7. Coincidence takes place on brown, desolate cape. (12)
• 12. Party supplies to infect bananas? (8)
• 17. Similar in nature to a monarch scratching bottom. (4)