18A - Roy Campbell said that, like wives, they are seldom entirely faithful (12) I have ??A?S?A?I???
24A - ancient kingdom inhabited by Byron, Huxley and Priestley ? (6) I have ??B?N?
15D - Lawrence's thankless work , owing nothing to Keats's beautiful woman (4,5) I have S?????R?I - I assume 'sans merci' but don't get the connection