There is no obligation if the service is failed to be provided, however if the government wants to get out of the obligation, they can't without large liabilities.
You mean they can re-negotiate the contract? I agree that they can and that's what they will do when the public spending cuts start happening.
Don't tell me, tell the government's financial reporting advisory board, who strongly disagree with you regarding reporting requirements.
Without reading exactly what they've said it's kinda hard to comment.
Mostly because various rule changes made it a more efficient way of doing it. Of course they are running in a much more structurally effective manner in the first place mind you.
Oh so PFI is good and efficient when private companies do it, bad and inefficient when governments do it. Ridiculous.