It's sort of a bummer too considering AT Still's right hand man at the original American School of Osetopathy at Kirksville was a Scottish Physician. I'm not sure about the other countries in the commonwealth, but DO's can practice in England. It's not easy, in fact, it's a real pain in the ass, but it is not unheard of. The reason I know this, is because a person in my family who runs a DO GI fellowship had one one of his fellows move to England.
A little note on the whole foreign thing.....
One of the most common attacks on Osteopathic Medicine is the failure of certain countries to distinguish the American Osteopathic degree as a medical degree from the European/Oceanic osteopathic degree--a purely manual medicine degree. I always read things like... " Yea but you cannot practice internationally." and I really find it funny because the context people write these things is such that it seems like 90 % of the pre-MD population has plans to establish their practice in a foreign country. I guess we're going to see Doctors leaving this country in the thousands for the greener pastures of England, China, and Pakistan....
Now let's look at the reality of the matter. Most of us are staying right here in the good ole USA. When I go to Europe, I'm going as a tourist. After I graduated from college, I took the summer before med school to backpack across Europe. It was an amazing experience, I saw all the beautiful sights, slept in the most shady places you can imagine, met some of the most interesting people, and just had a hell of a time. Of course I did it on a shoestring budget, but I swore that the next time I returned to Europe, it would be with money and that I would do it in luxury-- point being, I'm gonna vacation there, possibly have my honeymoon there one day... but I'm not settling down there. After working as hard as I will be, I will not want to think about medicine when i'm on vacation.. just picture the opening scene in Dr. Shem's book, the house of God when Dr. Bash is on the beach with his naked girlfriend....
Here's some more reality.... Most European countries will accept DO's, but regardless of their degree, there will still be a bumpy road ahead. Most American MD's will encounter almost as much difficulty gaining practice rights in European countries. Why? The same overall reason why DO's will have difficulty--Because most of these countries have socialized medical systems where they rely heavily on their own population by investing in their medical education. The same reason why state Universities usually take their own over people from out of state--these European countries prefer their own.
Now let's talk about medical mission trips. These countries and organizations who sponsor these trips are so desparate for physicians and medical care. I've never heard of an American DO being turned down for one of these trips to a needy country. Bottom line, if you want to leave this country and set up a life somewhere else, it would make your life easier to be an MD. If you want to have the option of doing mission trips.. do not worry about the letters after your name...
Sorry for the rant, i'm just tired of everyone claiming they are going to be practicing in a foreign country when in actuality the amount of people who do this is miniscule. This was not an attack on the OP, I believe your desire is genuine, but let's be honest, when it comes to this topic usually, most people are just all talk, and it is one of the weakest claims people make against osteopathic medicine in America.