麻豆约拍

South Africa's downgrade to junk status has stoked fears for the economy and sent jitters through the markets.

Shares in the country's banks have taken a battering. The logic is, if borrowing costs for the government rise, borrowing costs for the banks rise and borrowing costs for consumers rise. That could mean fewer loans in the immediate future and that hits the bottom line profits of the banks.

The 麻豆约拍's Matthew Davies sat down with Mike Brown, the chief executive of Nedbank, and asked him about his concerns.