Many thanks Jono for your parsing explanations, though I still don't get 9d - I've never understood & Lits.  But I'm happy to forget it now.  I think it is actually 50 years since my M.Sc.  Perhaps I should celebrate it!
Just finished making my Christmas cakes today. I hate the first two weeks of December because they are so busy - cards to write, presents to wrap and post, house to decorate.  Perhaps I shouldn't bother.
I look forward to next Saturday, when I'll have done half of it and can enjoy doing the crossword and reading all your comments.