PGCE Chemistry

Firstly, I hear Chemistry is a shortage subject (one of the top ones, Physics and Maths more so) so should I expect problems if I apply end of January, beginning of February (depending on referees)?
I am applying then because I have secondary classroom experience set up after Christmas from the 6th Jan onward, and also SEP set on the 14th Jan (which will hopefully last 10 days which is 2 weeks).

All fine.

I know this might be a silly question, but I have even asked some Universities just to make sure.

I have a degree in Medical Biochemistry with Industry and I am guessing I can go onto PGCE Chemistry. I have asked this because it says that at least 50% of your degree should strongly relate to Chemistry.

What does ''strongly relate'' mean?

I have had lets say pure Chemistry modules (about 5) and the rest of the modules are of course related to Chemistry (eg Biochemistry modules, Molecular Biology, Cell signalling, Genetics) but I never know what STRONGLY RELATE means.

It doesn't mean anything. There is no real rule and it is entirely up to the discretion of the training provider whether to accept you or not. In your case Chemistry is a shortage subject and they fall over themselves in the scramble to offer you a place. Remember your other knowledge will be highly relevant too as much of your timetable will be spent teaching the other sciences.