Only a couple of answers to come so there is the lot
Clue
1. Wobbly infants Jelly Babies
2. Clever boys Smarties
3. Edible Fasteners Chocolate Buttons
4. Inn on a planet Mars
5. Pirates treasure Little Gems
6. 100% rich metal All Gold
7. Sh!!!!! Whisper
8. Royal herbs Mint Imperials
9. Eating out on the grass Picnic
10. Princes Game Polo
11. Constellation Milky Way
12. 10 cents a drink here Dime Bar
13. Belly Dancer Turkish Delight
14. Self assembly tiger Kit-Kat
15. 9,10,11 After Eights
16. Races signalling Tic-Tacs
17. Drunken teeth Wine Gums
18. Eating flowers Cadburys Roses
19. Girls toy collection Dolly Mixtures
20. Dating agency Matchmakers