20 A. Duke quits unstable firm and - damn! - a princess (9)
???a??n??
15 A. Adversary back in nick makes an error (7) ??o???l
(I've been trying to fit in 'gaol'/nick, but am maybe on the wrong track).
I'd appreciate it if anyone could tell me if I've gone wrong somewhere, leading to the letters I have in this...
2 D. Plan surroundng a knight on Trojan mount (6) a?ae??
Thanks.