Hi everyone
Another stinker I think.
I've done more than half and still have to parse a number I've got.  Even my synonym book didn't include one for Geometrical  study or even geometry.  I still can't parse it.  Jono I got 17ac, but can't follow your parsing.  I'm not sure I have the right answer for the first word in 11ac as I have only one crosser.  I couldn't spot the dance in 6d.  Having said all that I Have much of north west and south east.  Is the definition in 1ac Universe?
Chris I couldn't understand your hint for 18ac.  It gave me an unheard of word.
Can I have a hint for 24ac, then I may get the others in the south east.  I have K?????G?  I can't for the life of me think of former chancellors of the exchequer.
It's not quite as hot as London here, but hot enough for me and my addled brain.
I must go and feed the cat, but I will be back.