Els Xmas Xword - Will be hints & Tips so DO NOT Fret!!

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Across
  1. 4. Big Els C Room for a world of opportunity
  2. 6. Ra Ra Bonca meal
  3. 9. Vain Itty in children's festive show
  4. 11. Car LP for band with it all (all!)
  5. 12. Exercise place with no additives
  6. 14. Big Cousin with a chiming voice
  7. 15. Derf. I said derF
Down
  1. 1. Murphy's Oscar on the way?
  2. 2. Granny's flowery pal
  3. 3. These Scots Pops are not that old!
  4. 5. Friend stops the boats and stows them here!
  5. 7. Master R unravels before getting keys to No. 10
  6. 8. Pat not dramatically above
  7. 10. Lucy dresses up with long-haired animal
  8. 13. Learning in conflict with candle string