And 23d definitely COD for me.
I'm very much 'non-Strictly' yet I managed the crossword even without reference to his forum, which is quite rare for me. So, thank you, Boatman!
Given the other comments, I'll just say that mostly I've found people very helpful on here, and not dismissive when I've had to ask about an 'obvious' clue. There are one or two who, every single week, seem to tell us how they have no time for this particular setter, or that particular format, or why a clue is rubbish. Honestly, I wonder why they even bother doing the Guardian Prize at all.