There are two centres in the UK at the forefront of stem cell research that I know of. They are at Newcastle Universtity and Edinburgh University. Since the South Korean research was involved in scandal the UK is at the forefront of stem cell research and I believe these two centres have licenses for all embryonic and umbilical research. Both centres have recently received multi-million pound grants to fund their research. It's just a problem that they aren't in the US and would mean the cost of travel and accomodation if your offer of clinical trial was taken up.
http://www.ncl.ac.uk/press.office/press.release/content.phtml?ref=1139827707
http://news.bbc.co.uk/2/hi/health/4563222.stm
All the best with your condition. I hope everything works out ok for you.