This matters because, unlike in quantitative fields where the actual methods of analysis are generally outlined in detail, qualitative researchers are incredibly vague - at all points of the process - about what analysis actually entails. People are carrying out loosely structured interviews, and then doing who knows what under the heading of ‘analysis’
Qualitative research is different to quantitative research, but it is rigorous if done correctly.
Sampling should he representative of the universe being explored.
Due weight should be given to all the data set.
There are a range of qualitative analysis techniques, which are well known within the discipline, at least one of which should have been applied.
It will be relatively easy to check if this has all been done. Sampling criteria, recruitment notes, transcripts of interviews and analysis approaches used should all be supplied, which could then be verified by an outside expert.
This would all come up in peer review.
However this project sounds horrifically sloppy, I struggle to see how Oxford can stand over this work.