Keys Christmas Crossword

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Across
  1. 1. Before unknown park (6)
  2. 3. School bird swapping sides internally (5)
  3. 7. Everyone runs into sense of self in dodgy 70s motor (7)
  4. 8. Dog show with commercial break (6)
  5. 10. The sound of the refuse collectors who were male but are now female (6)
  6. 12. Evergreen learners held by Scottish Old Man (5)
  7. 13. Mum and Richard shortly join nephew (7)
  8. 17. Holy Land cone holds mixed up tales (9)
  9. 18. Local firm with endless pain (5)
  10. 19. Diana's alien southern county (6)
  11. 22. Inexperienced enchantress drops tea in S.E. London (9)
  12. 24. Prostitute, protected minor, and local plod (6)
  13. 25. Initially very young nerds endure rough school (6)
  14. 28. Lincoln's received pronounciation or the endless Welsh beach (9)
  15. 31. Three quarters of total bad actor on Broadway.(6)
  16. 32. We hear public declaration of 28 grams (8)
  17. 34. Declare support for Ickenham troop (6)
  18. 36. Stubbornly certain this was the very first male ant? (7)
  19. 37. Guitar sounds like Scottish cattle prod (8)
  20. 38. A bit like Glastonbury, or a Conservative? (4)
Down
  1. 1. Bird nut holds the Italian back(7)
  2. 2. Ha, initially you're welcome anyway in Constable's image (7)
  3. 4. Local addled rodents surlier (8,6)
  4. 5. Woman with the Italian and a neighbour (6)
  5. 6. Blackshirts include Pacific Island line from Coach to Harefield (9)
  6. 8. Cornwall let local gulp (7)
  7. 9. Glastonbury based nonce sank Belgrano (7)
  8. 11. Geordie's possession on South coast (8)
  9. 14. Pull this mangled car reck (7)
  10. 15. NY duo's Algerian monk funds reallocated (5,3,9)
  11. 16. Neighbour, Dad, and posh row (7)
  12. 20. Quiet Chinese dynasty and cat's ghost (7)
  13. 21. DNA lobby mix for songster (3,5)
  14. 23. Weirdly, Homer dug a local hole (4,5)
  15. 26. Neighbour's support around aim (6)
  16. 27. Brother and nephew preserve endless sixth sense (5)
  17. 29. Geordie flower held by twenty new men (4)
  18. 30. Chopper's Western Isle (6)
  19. 33. Run into Anglican Church or castle? (5)
  20. 35. Cove Sir Geoff visited with Shadow (8)