www.jcq.org.uk/wp-content/uploads/2021/03/Summer-2021-Grade-Descriptors-GCSE.pdf
So to summarise grade 9 like grade 8 but a bit better!
Highlights include the difference between and 6 and a 8 in Geography: relevant and broad goes to relevant and comprehensive. That clears everything up then.
Last day of term so great timing, guess I will be spending some of it trying to decode what this means for my little niche subject (astronomy).