Very grateful for even more help with these clues please.
4dn: “Wrap is sexy, shortened at both ends (4).”
8dn: “It is put in the canal to limit waves (7).”
10ac: “Engrave plaque initially unwanted by playwright (5).”
18dn: “ Places for well-mannered Doctor, Having a day out too (7).”
26ac: “Old character returning in Sky feature (5).”