Hi Sebby
Firstly congrats on getting through the recruitment process. Normally depending on TOC it would be about 8 people to a class, however to help with social distancing some TOCs are restricting this to 4. This doesn't mean the other 4 wont start at the same time, just means 2 trainers in 2 seperate classrooms with 4 in each. Again it depends on how big the classroom is.
In addition if it helps as a free resource a lot of guys that i started with used
https://uktrainingsolutions.com to get the heads up on training. PTS will be your first port of call which you have to pass to continue. I know some TOCS use this website to do in classroom training.
Just might help and best of all its free.
Good luck with your new career