70 YEARS YOUNG

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Across
  1. 1. Knock Knock who's here? (5)
  2. 3. Party Island makes for an uncomfortable landing from a scooter (5)
  3. 6. Hard, grey rock was a worthy investment (7)
  4. 7. Clueless fool, one with cold feet (4,6,5)
  5. 8. Avian company tends to be very cold (8)
  6. 9. It is key to press this after a new answer phone greeting (4)
  7. 11. To play this game is crazy at a scan (7)
  8. 13. A French town going back and forth with a lawnmower (6)
  9. 14. An oculus with an insect leaving a nasty sting (4)
  10. 17. All at sea a canoe I managed to steer (7)
  11. 19. An enjoyable TV program, but initially not convinced it's serious (4)
  12. 20. Tropical fruit with swellings (9,5)
  13. 21. You play this game with a combination of nine tablets (5,6)
  14. 22. Birds that precede a simple numerical sequence make for an obvious key (5)
  15. 23. Famous sci-fi shows stellar journey (4,4)
  16. 25. Wizard harasses ceramic worker (5,6)
  17. 26. Put your left arm in,left arm out,take out the coke and poke it instead to make a sweet treat (5,5)
Down
  1. 2. A 60s pop star, a God and a Char, all seen together at a gym and a Palace (5,8)
  2. 4. Shortened, splendid-like, paired with a vowel swapped other find (11)
  3. 5. The school was taught to spread illness wildly on the weekend, leading to a Grammy and a film (8,5,5)
  4. 8. The man who floats with the ability to add an extra part (3,6)
  5. 10. An accompaniment for a vegetable, whilst being odd, is essential (5)
  6. 12. A runner whose name was erased from an ensign by rolling (5,5)
  7. 15. Shoes for DJ with nasal in a frenzy (7)
  8. 16. Rigorously Lounge (8,8)
  9. 18. Parakeet Pirates (6,9)
  10. 24. The first name of a lady who famously said Kappa-T-Clear (6)