Hi Anon,
Congratulations on your offers from those fab unis! I had a friend who did their MSc in Health Psychology here at Bath and I also did my BSc Psychology here so I'll see if I can help!
At the end of the day, you are the best judge of what is best for you. Due to the courses' BPS accreditation there will be modules that are taught at each of these courses that will be the same, but there may be subtle differences in the way these are assessed or the material covered. Therefore I would take a careful look at the course contents and see which one seems most suited to what you want to learn.
You should also consider what kind of a uni and city you'd feel happiest in. All of your choices are relatively small-medium campuses and cities (Bath perhaps being on the small size) and are not too far apart in distance. So where did you feel most at home and where could you see yourself living a fulfilling student life?
I cannot speak for Notts or Southampton, but the employment prospects here at Bath are fantastic. The MSc Health Psychology is one of the only BPS-accredited MSc courses in the subject to offer a 16-week placement in the country. This will add a lot of value to your graduate CV as well as adding to your clinical experience portfolio should you want to apply for an NHS band 4-5 job or the clinical doctorate later down the line.
There's a lot to consider but perhaps if you are still unsure, write a pros and cons list and see if there is one which stands out as a winner?
I hope this helps a bit, best of luck with everything and making your choice!
Holly
University of Bath