Monday lunchtime and the two of us have only solved 7, even after reading all posts so far which helped me get 20a. I can't be bothered with looking up lists of edutors, and agree with others who think this puzzle seems to need too much GK which just isn't GK, and isn't interesting to learn about.
FOI 10a (common experience, I see).
Also solved, in approx order: 9a, 24d, 24a, 26a, 21d, 20a.
Busy weekend doing more important things, like dressing up as "rain" in the WI's "Whatever the Weather" fancy dress group for the village Field Day (procession, band, kids' races, mini fell race , tea and cakes, etc). The rain held off till mid-afternoon, and it was warm enough that I was happily pouring water over my hair to top up the "drowned rat" look!