Shell Pan Africa has reappointed HRG to work for it in 13 African countries including Mauritius, South Africa, Kenya and Botswana.
HRG Rennies Travel managing director Kathy Harris said the agency was awarded the business partly in recognition of the cost savings it had achieved for Shell Pan Africa in the past two years.
"The retention of Shell in Africa for another three years is a great feat for HRG," said Harris. "We are also proud to have achieved many other new business wins and retentions in the region."
Bechtel, BNP Paribas, British American Tobacco, Coca-Cola, Deloitte & Touche, Nokia, Schlumberger and Sanofi Aventis have also recently appointed HRG.