HAMILTON Hill-based Cell Aquaculture Ltd has appointed company founder Perry Leach to the role of managing director, following the resignation of Geoffrey Leding Wilton (pictured) after almost a year in the job. Mr Leach stood down from the role of managing director last year, with plans for an ongoing role in research and development with the company. Mr Leding Wilton will step down from the board on May 18, but he will continue working with the company in the coming weeks to assist with an orderly transition.