23 Across, Greek area,one within island (5) ????A IONIA ?
15 Down, Get rid of upturn in risk that is restricting guy(9)E?A???A?E
ERADICATE ?
19 Down, Source of howling prevents a good deal of attention (7) B???H?E
25 Down, Walked out,though not following unacceptable service (3) L?T