Shades of Christians I spelled 23a wrong!
23a I felt unfair Gunner did not fit at but all gooner did.
With two crossers to 17d even I would realise that the third was wrong
I'm stuck with 4d: it's funny having looked over children's TV programme. I have ?R?W?S and am considering the ending WAS because it's SAW turned over, but I don't think there's a word (or TV show?) like that. You all must have this already...