Hi, I can give experiences as a post grad student in Uni Glam and Swansea.
Firstly Swansea I have found very well organised and an excellent university I have worked in both morriston and singleton hospitals and have enjoyed both, details of Swansea Uni can be found at www.swan.ac.uk
Uni Glamorgan again was as a post grad and the first course I did was very good and I enjoyed greatly but my second experience was not so good, in fact as a result of the attitude of some of the tutors and because I was a self funding student I tuirned down the place and opted to go to swansea which was a really good decision.
I have worked in some of the hopsitals that Uni Glam send students to and although it was some time ago I enjoyed working there.
Can't give any information about Cardiff Uni as I haven't studied there but have worked in cardiff and found that there is a great variety of specialities in a small area, some students really like this and some prefer a more generalist envionment it depends on what you want from your training.
If you need to know anything else please PM me