Jasper's Birthday

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Across
  1. 2. 500 on a chemical scale for self-inflicted misery (3)
  2. 3. Kilo scratch high condiment (7)
  3. 9. Five on mimic for guilty pleasure (4)
  4. 10. This chef takes one ring with spirit on a gram (6)
  5. 12. Noteless trowel takes up nasty scaremongering for contact sport (5-5,9)
  6. 14. House hide (say) by good health (7)
  7. 15. The here and now, this is a cheap one (7)
  8. 17. Farm worker for tyrannical leader (5)
  9. 18. Tiberius was a not-so-famous classic phrase (7,5)
  10. 20. Work for a party (6)
Down
  1. 1. Just up from the eighth house on the street there's a cracking show (6,6,4)
  2. 4. Question pig for our first meeting (6)
  3. 5. Nosh for an inappropriate school crush (6)
  4. 6. Tutu trades halves of disk-jockey for happy place (7)
  5. 7. See broken ride for tipple (5)
  6. 8. "Pertaining to the Pope" you say? "A fine financial asset" we hear (6)
  7. 11. Legend of short woman with a cat noise say? (6)
  8. 13. Family of Bills (8)
  9. 16. Example note found on the faces of fools (3)
  10. 19. Fighting duals for your old club (5)