Still struggling big time so any answers or clues much appreciated
21. SWF WLTM SWF NS GSOH ISO LTR
DISCHARGE STEAM
24. LONE
29. NIgHT
35. CCCCC PRESTIGE IT'S O&
42. (In a speech bubble) There you go, that's my Lancelot; let me have it back when you've finished with it. Bubble goes down to what looks like a trident sign