I can update 3 of them:
15. Eccentric (8) ????k?o?
the cryptic clue is " At break , having tea with a nut case "
9. Split ( 5 ) c???e
the cryptic clue is " split the figure , dear "
13. More oppressive ( 6 ) ?L???r
the cryptic clue is " Heavier , he concludes