Here's a bit of potential "ammo" for you.
When you started were you given an induction?
Were you given/talked through a method statement on performing your job? Did you sign one?
Was a risk assessment done on your job function/machine operation?
Basically, if you were not inducted and shown how to perform your job, and you were not signed off , then you can report your boss to the HSE.

You can also sue for unfair dismissal. I.e, you were not shown how to perform your job/trained, therefore the f**kup is not you fault.