PCPO Cryptic Xmas Crossword

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Across
  1. 2. The executives travel by electronic taxi
  2. 3. There is a big change brewing within Naomi
  3. 6. A fan of the metric system, likes to organise projects
  4. 8. A locksmith from Istanbul sells these
  5. 9. Beefed up espionage left out for Santa
  6. 12. Michael levels up for accountability
Down
  1. 1. Hurried attack on female deer, assumed risky?
  2. 4. A projectile launched from the foot, but 5 seems excessive
  3. 5. Time for marketing to let off some steam
  4. 7. What's the weather looking like tomorrow darling?
  5. 10. Robbie Williams is confusing obtuse and acute
  6. 11. The gentleman is looking a little frosty
  7. 12. There in spirit and usually first to go, but this host is missing a helipad