I found this very easy by Guardian prize standards, but with enough challenge to make it enjoyable. Interesting to see others saying they found it difficult; clearly different minds are suited to different styles. FOI 1a, which I got within seconds of starting to look at the puzzle. LOI 15a, which I still can't fully parse. Any help? Does "either" do double service in two parts of the clue? If it does, then unless I'm missing something it seems to me like a poor clue, so if anyone can point me to a better reading I will be very grateful. I wasn't totally happy about 27a, not because, as someone else has said, because the word is a "mistake", because whatever its origin it is now an English word, but because calling the food (not the word) "Anglo-Irish" isn't right, IMO. I think I'll settle for 25 as my COD, though a couple of others were close.