Thanks Chris
Got it and 28ac. I thought I had an answer to 25d, but it's not in my Chambers. But once I turned it round, there it was.
Thanks to everyone for your help. FOI was 10ac, though I didn't get the parsing. LOI was 25d and COD (whatever that means) was 15d.
I can boast that I knew all the words apart from the theme words.
I've never come across Bogus before, but I do only have time for the Saturday xword.