Finished almost, have all unclued lights & theme, but struggling with understanding last 3 clues:
18d Couturier's punts (6) ?U?NT? (quanta?)
23d Like a many-hooked bra? (8, hyphened) L?N?LI?E (land-line?)
30d Bits of red cabbage gobbled in WI cookery (6) ?R?OLE (creole?)