Thanks again syzygy and sunray. The term in the clue to 11d was new to me, we use granny which is equally obscure (in Chambers).
I liked 47a, 31d & 32d (straightforward but nice definition).
Very nice. Thanks, syz and sunray. The only parse I can't quite see is for 47a: Notice not needed in acceptable match (6). I have the answer and am prepared to be embarrassed.