Why would you believe the institution that granted the PhD? They’re never going to admit they screwed up in granting the degree, how do you think that would affect their reputation?

You can examine his writing and the writing he stole from, side by side. I would suggest doing that instead of believing an institution who has no choice but to lie if they want students to apply to their grad schools in the future.

Liverpool John Moores University doesn’t have a reputation - the only one it’s got is that it’s a former polytechnic attended by people who are never going to cope in the real parts of academia at even the nearby University of Liverpool. Cambridge would have never given this man a degree never mind a doctorate, but once he had one it was a pass to getting inside.