I finally found out after some research that in the us, if you do atpl theory the testings can be done over us territory but are then sent to UK for validation.
The UK CAA has several testing facilities outside of the UK, one of them in Florida.
http://www.caainternational.com/site...p?category=305
You will find all of their international exam centres in that link. Note that in some of these locations, they charge 88GBP instead of 68GBP.