Proton Power Systems plc announced the following changes of Director Responsibilities, effective from 20 December 2017: Achim Loecher has resigned as Chairman and Company Secretary to pursue new challenges outside the Proton Group. Helmut Gierse, a Non-Executive Director of the Company, is appointed as Chairman with immediate effect. In addition to his Group Finance Director role, Roman Kotlarzewski will take on the function of Company Secretary.