Climbing cryptic

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Across
  1. 2. Say “Mother” - fog forms all round ‘er (7)
  2. 3. Will’s Nana, down in Cornwall? (8)
  3. 6. A classic play needs direction, edge, narrative (4,3,5)
  4. 10. Either of two Central European siblings speaking more offensively (6)
  5. 12. Flashy dictionary (7)
  6. 14. Hero android loses id in a scuffle (5)
  7. 16. Fitness centre said pontiff is no longer a comp kid (3,4)
  8. 17. Three learners, and fate… combine with Wales, and you’ve got a classic lob! (4,4)
  9. 18. Champion inside prober? Tsk… (7)
  10. 19. Mystery man hiding within shopping? Ask in store (7)
Down
  1. 1. Ordering Kentucky salmon is a holiday delight (8)
  2. 4. Half curled, Rab returns to eastern edge (6)
  3. 5. Yes! In Spanish, Drew’s opening exchange contains “La Rambla”… (7)
  4. 7. Dual heart delusions somehow made controversial novel (7,4)
  5. 8. Difficult start to gaia results in the best film (4,4)
  6. 9. Brummie: “unpredictable northerly snow, like” (3,6)
  7. 11. Tip Labour leader and stop! Beginning to upside down holiday? (9)
  8. 13. Presenter with horrific ulcer is stamina king (7)
  9. 15. It smells of a historical ascent (3,4)