well i am real sorry that you have had to deal with all of this. From my own personal experience in getting sent over to Germany with my husband ( april 04), the medical clearance I had was a joke--They sat with me in an office, asked me if i had any problems, etc. I said no, and so they stamped my paper and I was on my way with official medical clearance.
I found the entire process of trying to get done what i needed to go overseas to be extremely disorganized, and very frustrating.
What i have heard, is that all family members are screened ( hopefully more throuroughly than I was) so that they can make sure the facilities which will be near you can handle the care you may need.
I have no idea where in England you were going. Are there military hospitals near there?
I'm not sure their reasons, but if ultimately they didn't have large medical facilities near where you'd live, I'm not sure i'd want to go either.
In Germany, they have a lot of large hospitals and therefore, i think it wouldn't be an issue in Germany. Although I have come back to SC for this year b/c my husband has been deployed, we'll be going back to Germany in May 05'. Several of my friends there in Germany had the gastric bypass (open) done there in Germany in German Hospitals.