I can confirm Bristol Uni MSc is called IGDS, but I can't remember who it's a partnership between.
I did a couple of modules from the course just as standalone learning, and they weren't bad. Though I did have trouble with some of the aeronautical stuff as I had an electronics background, and hadn't been flight testing for very long.
The 2-3 modules I did where residential types, one at Bristol (Clifton?) and one up near Manchester somewhere (one of the test pilot schools, I forget which). I think a lot of the modules where 1 week residential courses with an assignment to hand in after.
A couple of people where I used to work in the UK did (and may still be) doing the full MSc course, I could probably find out details from them if you want to know who to contact for more info.
SU.
Edited to add: Course was at Woodford, and was actually a Flight Test Principles and Practice module.