You can also get a UK CAA Class 1 Medical done in Syd, Mel, Bris if you know the approved medical examiner. I dont have the details with me now, but will look them up - but from memory the examiner in Syd has his offices in Australia Square (tower block) and as long as you are an ATPL holder with > 500 hrs then you can get the medical done.
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Its life Jim, but not as we know it!!