University of Aberdeen, great place - loved every minute that I wasn't with my supervisor! No geographical preference, looking for online/distance learning with credibility

I am 5 months in, self funded, part-time and quit yesterday. My lead supervisor was so controlling that it began to feel like a 5 year jail sentence. I did ask my advisor about changing supervisors but what guarantee that the next one is any better? And I am paying for this! Uni has asked me to take time out to consider but I am searching for universities that offer online PhD in Medical Science. Anyone out there with any recommendations?