Fri 09 Sep 2006O'Brien makes pre-flotation move to MaltaDenis O'Brien has taken up an address in Malta, the Mediterranean island which charges no tax on assets or income not brought into the jurisdiction.The move comes as Mr O'Brien is preparing for the flotation of his Caribbean telecoms company, Digicel, on the New York Stock Exchange, a deal that could net him up to €1.5 billion.