5 remaining.
25A - from pirated edition of Maxwell Anderson (9), I have ??C?A?E??
27A - Huxley wrote it following a pen ad. (modified) (7) (which Huxley ?). I have E?S?N??
7D - Dickens character who showed some mercy (7) I have N?W?O?E - Newcome, Newsome ?
20D - Associated with the ballad by layman, say (6). I only have ?O????
25D - Like Fry's saint whose mother was in the cart (3). I have ??Y. I guess this must be BOY from Christopher Fry's 'The Boy with a Cart' but I don't get the 'saint' bit