Guinness Nigeria Plc, a subsidiary of Diageo Plc has announced some changes in the leadership of Guinness Nigeria Plc. After two and half years, Seni Adetu will be stepping down as Managing Director/Chief Executive Officer, CEO, of the company at the next board meeting in November 2014. The company also announced the appointment of John O’Keeffe as his successor. O’ Keefe will resume in November 2014. To ensure a smooth transition, Seni will work alongside O’ Keefe until end of December 2014.