Ten out of Ten Brits

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Across
  1. 4. Where, oh where, oh where is she?
  2. 5. Street name reminiscent of Eltana item
  3. 6. Epic work of historical fiction featuring Elizabeth, Maddie, and quite a gruesome climax (with 'the') (2)
  4. 10. Something requiring patience at Woodland Park Zoo, musically? (3)
  5. 13. Dynamic radio duo known for second-date updates (3)
  6. 14. Dearly departed feline with extremely piercing eyes
  7. 15. Supernatural babysitter
  8. 16. Extremely catchy song, or adorable fungus, in France? (2)
  9. 18. You can work on your novel, eat at Pen Yen or people-watch here (2)
  10. 20. Warlocks, or shortened Disney show where the only good character (according to Mummy) wore dresses made of coloured pencils and rubber ducks
  11. 21. Fairytale incantation or Notting Hill business endeavour (2)
  12. 24. FASPS preteen SoundCloud rapper, bestdressed in Ascott, or Love Focaccially MMC?
  13. 26. Question often put to the father of a spoiled character in 25-Down, or Jamie to theirs? (2)
  14. 28. Cold in Cuneo, perhaps?
  15. 31. If Daddy had been to this Eastern European city at the wrong time, this family would not exist
  16. 33. Resilient, or short for a world where you can be anything from Little Wind to a Big Fish
  17. 37. Iconic roadside poultry, in lockdown (4)
  18. 38. Menu options here include salad bowl, rice bowl, or half-and-half (4)
  19. 40. Where Mummy went by Mademoiselle for a year?
  20. 41. Tricolon username, without statistics (3)
  21. 42. Publication where you can find an excellent recipe for ice cream cake (2)
Down
  1. 1. Kid detectives of bedtime story fame who really could've used some adult supervision (with 'the') (2)
  2. 2. Italian childhood classic to be cooked when there are no Mindful Chefs (5)
  3. 3. Where one might find linguists, rugby boys and lawyer ex-boyfriends (and stuffed bears) (2)
  4. 7. ____ Mercer Way
  5. 8. Famously clean-shaven Biblical figure (3)
  6. 9. Hospital nickname for someone who has never been described this way ever again, with 'the' (2)
  7. 11. "I Gotta Feeling" that you might find potato salad, champagne, Savoyes and Brown-Joneses here
  8. 12. Corporate employee who was the subject of much whingeing, and, on the same hand, sounded very annoying, guys (and ladies) (2)
  9. 17. Celebrity who might describe an 8-yearold as awesome or rap about ceilings and Cadillacs
  10. 19. Where one might find 7th Heaven, Mongolie Grill, or an 8-year-old awake at 4 am?
  11. 21. Maternal nickname, Sultan's advisor, or special day at CLC
  12. 22. Palindromically named Antarctic animal who wanted to find out, in literature
  13. 23. Extravagant
  14. 25. Sitcom with episodes such as Woman of the Year, March 31st, and Flu Season, abbr. (3)
  15. 27. Another word for a very comfortable dress, to Mummy (2)
  16. 29. Often found on the back of the Christmas tree, to Mummy's dismay? (3)
  17. 30. Best place to get a sweet treat on the French Riviera (2)
  18. 32. Acapella group, canned meat or unwanted email
  19. 34. How a 3-year-old might pronounce the food served at a conveyor-belt restaurant
  20. 35. Animated film featuring an onomatopoeic tea party (and a very fluffy unicorn) (2)
  21. 36. Katy Perry hit that one might try to go viral for lipsynching?
  22. 39. You probably shouldn't trust Daddy to cook this Christmas Day treat (3)