I am sorry, yes, I can see I wasn't sensitive there. I apologise, I had divided attention when I wrote it and shouldn't post and parent at the same time. I was responding to the idea that the OP's child is being ripped off because he doesn't have exams. In fact, it is likely the opposite.
Exams are very difficult to administer. As much as people complain about fees, universities are still massively underfunded compared to a couple of years ago. We have many fewer administrators. If I have a class of 100 people, and 15 need their own room for exams, then we need to find 15 rooms, and several people to invigilate. It is a lot to organise. It isn't as easy as just setting an exam, and it isn't about teaching. It is about logistics.
Many of my best students have PLSP and I am very glad that university does such a good job with alternative assessments. Many of our students weren't even diagnosed as dyslexic before university, and the difference to them that comes from them diagnosis and support is meaningful. I don't believe for a moment that the ability to be a fantastic student, benefit from education, and use that education to have a meaningful career, or just be happy, is in any way correlated with the ability to succeed on an timed exam in a room with 300 other people and me tiptoeing around handing out extra paper. This term my three best students have PLSP and I am just grateful for the opportunity to teach them. I hope that what I teach them makes a difference.
It would seem that exams are not the fairest way to assess people because the typical format doesn't suit many people. In that case, alternative assessments (essays, take home exams) may be more efficient. We do give exams when it is the best assessment, but exams often favour the lecturer. They are easier and faster to mark than essays or papers.
If the OPs child is writing multiple papers and getting very good feedback, he is probably getting a better education than someone on an exam heavy course. Exams are better for some subjects than others.
The other problem is that so many students buy essays now, exams are often the only fair way to assess. It isn't easy. There isn't a perfect solution. But I will say that universities are not awash in the luxury of the £9000 a year fees. Like every other sector, we are feeling the pinch of austerity and trying very hard to deliver more for less.