By Segun-Ogundeyi Fiyinfoluwa LAGOS — N Seven Nigeria Limited, the Tolaram Group company that controls Guinness Nigeria Plc, has increased its stake in the brewer to 70.9 per cent, according to a disclosure to the Nigerian Exchange Limited (NGX). The company acquired an additional 499,987 Guinness Nigeria shares at N370.90 per share, in a transaction […]…