Melanie’s Seventieth Crossword

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Across
  1. 6. Law will untie shattered tree (6,6)
  2. 9. Dances with a wife - that's a puzzle (6)
  3. 13. Cold house - one originally reserved for group of singers (5)
  4. 14. Name Eli gave his daughter (7)
  5. 15. Sign next to railway building (7)
  6. 18. Wasted Rat could be? (5,4)
  7. 19. A rash girl? (5)
  8. 21. Voter upset by right man (6)
  9. 23. Small, constant, extremely tiny number (7)
  10. 24. Instrument of Scot in post office (5)
  11. 25. Oxford College originally named after its founder, Cardinal Wolsley (12)
  12. 28. Relatively important timber producer? (6,4)
  13. 30. Keys for getting out (4)
Down
  1. 1. Error exchanging rook for knight, following failure to see mistress (4,7)
  2. 2. Yeah, we left muddled village (10)
  3. 3. Quietly drink, spilling gallons? This might be baffling! (6)
  4. 4. House seductress clutching large ring? Not half! (10)
  5. 5. One in a den shaking before lion's entry? (6)
  6. 7. Pilot supports church president (8)
  7. 8. Old monarch at first just omits his name (4)
  8. 10. Snail copter shuffles into village? (11)
  9. 11. Heart perhaps that's stopped in church? (5)
  10. 12. Composer's name called out (6)
  11. 16. Oratorio is recalled in shame, unfortunately (7)
  12. 17. Clowns right among healthy group of siblings (10)
  13. 20. Mr Ford styled Ron's hair (8)
  14. 22. Groundsman extremely relieved, falling for a woman (8)
  15. 24. Ely Pru moves to local town (6)
  16. 25. Exchange acme loom with North West School (10)
  17. 26. Game of golf needing fortieth round (5)
  18. 27. Angry exchange you are looking at (9)
  19. 29. Used canes to attempt to find predecessors (8)
  20. 31. Bend over during pause (5)