Puzzle time

My Mum sent me this on a piece of paper ages ago; it’s been sitting in my office waiting for me to digitise it so I can recycle the increasingly frayed piece of paper…

Each of the following represents a short well-known (or maybe not so well-known) phrase. The puzzle is: what’s the phrase? To get your started, the first one is “5,4,3,2,1 Thunderbirds Are Go!”.

  1. 54321 TAG
  2. 200 P to PG in M
  3. 516 & NBK
  4. 6 W of H the E
  5. 3 S to H
  6. 18 VA
  7. 11 DS is the CH
  8. 5 GR
  9. 9 L of a C
  10. 24 C means PG
  11. 2 Q in a C
  12. 2 LDBs on a W
  13. 50 W to LYL (PS)
  14. 50 S of A
  15. 24 BB in a P
  16. 1001 AN
  17. LBA 40
  18. 10 D in D
  19. 8 is the SR of SF
  20. 3 M & a B
  21. 39S (JB)

Answers in the comments section? I hope I’ve read her handwriting correctly. :-)