Many thanks Brendan. I was annoyed as at one time 12ac was the only one I got and now of course it is wrong. However, I found the correct answer for it and 14d. My incorrect 12ac also misled me with 7d, but I've got that now. I have still to get 6d. I think I have it now. And 11ac falls in to place.
I also got 1d and I've made a wild guess at 8ac, though I can't parse it. I have a dead (19C) statesman. I've also made some progress on the southwest corner. I've guessed at 21ac a word meaning top. I thought I'd got 22d, but cannot solve 25ac. for which I have ?E?F?O. So I may be wrong there.
Not much progress on south east corner and 4d, but I'll keep at until scandi noir.