You gave me a fright with OXANA; I wouldn't have known what to do with ADNEXA! Only two little mysteries left: I have NOISE for 4D but don't know why, and HAULAGE for 21D (ditto).
Thanks, stevem. I thought the same about haulage/transporters. U/top-class is one of those simple Brit things that causes major problems for non-Brits.