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I've just googled the question and I was directed to GMTV's webpage. They have a long list of FAQ's, as you click on a question it puts the answer underneath, it seem that all entries are transcribed? (is that the word) into the same format and then a winner is selected from that. It was interesting to see that if you are out when they call they will still try for 3 weeks before they reselect another winner to allow for holidays. Thanks everyone for your input