External examiners at post-92 universities tend to be from other post-92 universities.
For some post-92s, maybe. I'm a lecturer in an RG university and, like a lot of my colleagues, I'm an external for one of the higher-ranked post-92s. I've also done accreditation work with another post-92. They appear to actively seek out people from the RG. But, ironically, their moderation standards are way better than ours, as is the conduct of their exam boards.
What about those being awarded CNAA degrees pre-92? I have always been told that the CNAA exercised rigour in moderating to keep poly awarded degrees to a good standard.
That is anecdotally true, but it's hard to compare with nearly 30 years ago.
We exploit international students by overselling our 'amazing' British education at Universities.
I've had it on good authority that at one RG university with a high level of Chinese students, not my own, there have been complaints from the Chinese students that there are too many Chinese students and they might as well have stayed at home. If you're in a campus university on the edge of a provincial city, in a room which is 80% Chinese, the demonstrators being Chinese PhD students and the lecturers mostly non-British, just which part of the "British" education system are you getting for your twenty grand a year?