David Keast

Part of Nippon Telegraph & Telephone Corp., Plessey Corp. Ltd. provides telecommunication hardware and services. The company is based in Cape Town, South Africa. Plessey Corp. was acquired by Dimension Data Holdings Plc, a SUB of Nippon Telegraph & Telephone Corp. from Pembani Group (Pty) Ltd. on November 27, 2005 for $18.45 million.

Part of American Tower Corp., Venture Communications SA provides communication systems and equipment.

Part of MTN Group Ltd., Mobile Telephone Networks Pty Ltd. is a South African telephone communications company. The company is based in Johannesburg, South Africa.

Africa Venture Partners is a private investment firm specializing in telecommunication investments. The company is headquartered in Sandton, South Africa.

Accelon Africa Ltd. provides internet services. The company was founded by Robert Tibbs and David Keast and is headquartered in Johannesburg, South Africa.

Lotaris SA engages in the development, management and monetization of mobile security applications. Their solution areas encompass licensing, entitlement management, purchasing proposition and transaction, behavioural analytics, and campaigning. The company was founded in 2006 and is headquartered in Yverdon-les-Bains, Switzerland.