Well of course it depends what trigger event(s) the PL are relying upon . Many have inferred it relates to the stuff associated with the Der Spiegel articles but that is a conclusion that is not assisted by the lack of meaningful particulars (or evidence) in the public domain relating to the charges.
So based on the current position about lack of particulars it’s pretty much impossible to evaluate when the limitation period begins and ends - and given the reasonable diligence arm of section 32 (notably distinguished from ‘all due diligence’) then there may be further arguments around limitation relating to that, possibly depending on what period the particular charge(s) relates to.
Thanks, and in fairness, I only really am discussing my understanding of the logic of it, rather than specifics and predictions of what will happen here. I.e arguing one or the other makes more sense doesn't mean I expect it to be the case. River's post is at odds with all of the above though, at least with how it is worded, and (to me) seems to change the whole concept.