In typical Paul fashion once I got 50% through, the rest started to slot in place though many I still can't parse including 16d.
I think I found this a tad frustrating probably because it was a bit difficult for me not because I think Paul did anything wrong though I stand by my questioning of 9a as a definition. All in all it was very clever.
FOI 10a. LOI 1d
COD 23a
Thanks Paul for 8 taxing hours of my life I will never get back. But in a good way.