Mr Gerry Nagle has been appointed chief executive of Arks Ltd, the Dublin advertising agency. A native of Cork, he has returned to Ireland from the Middle East where he was chief executive officer of Saatchi and Saatchi since 1990. Arks says that, during his tenure at Saatchi, the agency increased its annual Middle East turnover from $5 million (£3.1 million) to $60 million.