Actually, you are allowed to get your initial JAR Class 1 medical in any of the approved states. However, if you want the UKK CAA to issue you with a licence upon completion of training, then you need to make sure that you send ALL the details of your medical to the Medical division of the CAA along with a cheque (yeah you just knew there had to be money involved somewhere) for 22 pounds. You should also send the ecg REPORT or else they will charge you an additional 27 pounds for your ECG to be reinterpreted by a doctor in the UK.