QUOTE(minnietheminx @ May 8 2008, 06:00 PM)

Yes!!! You can!!!
I had my interview and medical on the same day in London (interview at 9.30, medical at 2.30). All it does is delay your visa slightly (visa wont be issued until the embassy have your results).
At the embassy, before you have your actual interview with the American consulate officer you hand all your documents to an English person. When he asked me about my medical I told him I was having my medical later that day. He just shrugged and said "this must be a new trend, 3 people who Ive seen before you are doing the same thing".
As for the delay, it wasnt so great. I had my interview on a Wednesday, doctoes told me the embassy would get my results by the monday, my visa was delivered via courier the following thursday. So a week and one day. Not bad really.
Gareth plans to try and do his medical the same day as he doesn't want to pay for two trips to London since we already have so much other stuff to pay for!