stuck on 4 - need some help please
PUZZLE NO.10
11 DOWN (7) WITH CURVED SPINE ???O?E?
12 ACROSS (4,6) PARTY'S FAVOURABLY BIASED SPOKESPERSON
?P?N?O???R
21 ACROSS (7) VEIN (OF ROCK) ?L?A?U?
24 ACROSS (7) COSMOPOLITAN ?P?L?L?
That's if other answers are correct up to now.
Thankyou for any help