1: Think at length about lost planet, comet (11)
2: Mary-Jane crochets her Pop a jumper (11)
3: Get rid of Tom for trip to North Pole (3,6)
4: Scrooge in film is erratic (5)
6: Frost to cover the cake (3)
7: One final, huge Greek goddess (3)
9: Most organized, I'd interest in examination (7)
13: Just grazed the pasty? (4-7)
14: Small drinks for each young man's agent (11)
16: Particular esteem (7)
17: Smuggler participating in arms race? (9)
21: Drive carefully and live (5)
22: Notes spent in Germany (5)
24: In the manner of a girl (3)
25: What's left when you burn the tree (3)