I'm almost done, but I'm totally stumped by three questions - would be very grateful for help or hints!
19 across: Passion in Seville's about during tribute (?u???e)
19 down: Drum's nearly raised floor before kick-off (?????)
30 across: Chap marks all but unknown mineral for Australian reef (??mbara) (it's possible the the 'b' and the first 'a' are actually 'i' or 'o', due to the identity switch).
Thanks everyone!
Still struggling with this, however for 30A. I have bombora which is an Australian reef. 31d, I have as Aran, but this would therefore change to Oran. Hope this helps.
Any hints on the theme would be gratefully recieved.