Vodacom has lost one of its top executives to Kenya’s Safaricom. The JSE-listed cellular group announced after the markets closed on Thursday evening that its chief officer for corporate affairs, Bob Collymore, was leaving to take over as CEO of Safaricom. Collymore, previously a Vodafone executive, will join Safaricom in September. Both Vodacom and Safaricom have significant shareholding from the UK’s Vodafone. Like Vodacom in SA, Safaricom is Kenya’s largest mobile operator.