From Computershare UK...
"Holders of IGas shares in Australia that wish to hold their shares in CREST should complete the Dematerialisation form that they were sent with their certificate, and present both to a local broker who would then pass to their UK branch for submission at the CREST Counter in the UK. Please note that the broker in Australia must have an ‘international’ presence."
DTE Price at posting:
13.0¢ Sentiment: Hold Disclosure: Held