Diane has been the Chief Executive of Old Mutual Investment Group since January 2011.

She occupied the position of Old Mutual South Africa Finance Director since 2008. As a member of the Old Mutual South Africa Executive Committee, Diane chairs Old Mutual South Africa's Operations Committee and brings in-depth and detailed experience and knowledge of the business. An astute and experienced business leader, she is also widely credited for streamlining Old Mutual South Africa's financial functions into an efficient and well-managed functional business entity.