OK, I give up! Last three
16ac Money backed in southeastern islands principally (6) I have SE???I Is it SEMISI?
19dn Swallow cry tails off and a kestrel appears (7) I have S???YEL I guess YEL is YELL (cry) tailing off.
25ac Plant close to Indian city (6) I have O?A?R?
Thanks for any help.