Thank you @Lunde , thats how I am understanding this.
Its slowly dawning on me just how bad and horrific the Post Office acted.
(Just to be clear, I understand how bad the PO are,but in fact its wirse rhan what i thought)
But, the fact they changed how our Justice system works by making SPMR prove themselves innocent has only just dawned on me.
No wonder Judge Fraser and the Court of Appeal judge were bloody furious in their judgements and gave Post Office such a hammering.
The Post Office essentially bastardised our legal system.
Maybe I'm super slow, but I'm starting to get it now.