Just one left which has defeated me:
10A The interpretation of signs or omens (6) ?U?O?Y
EULOGY, EUNOMY and FUMACY all fit the letters but none fit the clue. Any ideas?
I think all the letters are correct as they are the third letters respectively of each of these clues:
6D Largest constituent Emirate of the UAE (3,5) ABU DHABI
7D Egytian tree with divided trunk and edible fruit (4,4) DOOM PALM
8D Narrative epic poem but of shorter extent (8) EPYLLION