The bus I caught was PSVAR compliant (PRM doesn't mean the same thing in bus provision as it does in rail). PSVAR mandated it to be compliant, as it was a double decker bus first used on or after 31st December 2000.
The fact that at that point bus operators could still use inaccessible double decker buses whose first use was before 31st December 2000, had no relevance whatsoever in my case.
I say "my" case because I was the claimant. I lived and breathed that case through its 5.5 years in court, did a lot of research for it, shouldered the financial risk, made the decisions, liaised with all parties, contributed to all the papers, was present at all the hearings and have intimate knowledge of every detail.
Your claim that the 1st January 2017 deadline had any form of importance or relevance in my case is entirely incorrect.
It's also irrelevant to the discussion about FTPE's Mark 3 coaches, so I suggest we get back on topic.