The six sub-committees of the board have oversight of the following broad areas of the business: investment; health, safety and environment; audit and risk; social, ethics, human resources and transformation; remuneration and nomination.

In terms of the group governance framework the discipline of governance is driven from the top down, facilitating devolution of responsibility and avoidance of duplication, whilst ensuring clarity of the relationship between the group and its subsidiaries. The board is the custodian of the group governance framework.

Group governance framework

Group governance framework [graph]

Board Charters

The board's responsibility

The board is ultimately accountable for the performance and reputation of the group, ensuring that it continues to operate responsibly, ethically and sustainably. The board operates in terms of a board charter which defines its mandate, functions and responsibilities, some of which are illustrated below.

The board's responsibility [diagram]