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The biggest issue that you will have is when did you graduate from your training program? What is your specialty? Training in the UK is now quite different from that of the US, as well as Canada. If you graduated in the past few years, you are going to have a couple of classes that you will need to make up before you will even be permitted to sit for our licensing exam.
You will also have immigration procedures to follow afterwards, so it is going to be quite hard for you to be working in HI within 12 months, if you need classes to be made up.