If anyone's still around, a mere 5 hours before the next puzzle goes live... I've got a totally blank NW corner. I'd appreciate a nudge on any of
1d, 2d, 3d, 4d, 17d, 18d; 7a, 9a, 12a, 16a.
7 looks as if ought to be an anagram of atoryguru, or perhaps of joint followed by acon ...?
1d, presumably N, [new], E = a gangster?
4d has to have some connection with Noel of 23
18d has R as 3rd letter, which might explain Romeo, but "pon" doesn't mean love, so that's one failed idea
etc
(Tried to ask this last night but my phone wasn't playing nicely with the forum - now opened it up on the desktop machine for the first time)