Our proprietary accounting methodology links sustainable business risks to financial consequence. The framework, based on a combination of our internal priority risk model and the SAM's Corporate Sustainability Questionnaire, aligns with the Corporation's Activity Based Costing (ABC) system as the accounting base. It utilises data from staff, departmental operating expenses and, as of 2004, includes non-risk capital costs principally sourced from the asset improvement works. While not indicative of overall corporate operations, this accounting process enables us to identify, measure, quantify and compare annually the costs of our sustainability risk management on a passenger-services basis.

The results over the 2003-2006 annual accounting periods conclude that we are able to meet our annual EMS targets and control our priority social and environmental risks with increasing efficiency and productivity. It is also noted that with the introduction of the Enterprise Risk Management system, these priority risks have not changed significantly.