You're pretty good yourself, Jazzgirl! I got Brideshead Revisited from the "new veil" bit of the clue and several cross letters. I had no idea where Sebastian fitted in until I read your post.
I seem to get the answers somehow, but not always the correct way of reading the wordplay. I notice that you not only give answers, but the parsing is always explained and is so accurate (unlike mine). Thanks
Thank you all, especially for the explanations. I've read at least 4 books a week for as long as I can remember, so I did know about Sebastian but I still thought it odd.
Potting shed. Of course. Doh!