There is significant uncertainty regarding the extent and timing of the remaining costs and liabilities relating to the 2010 Gulf of Mexico oil spill (the incident), including the amount of claims, fines and penalties that become payable by BP (including as a result of any ultimate determination of BP’s appeal of the ruling of gross negligence), the outcome or resolution of current or future litigation and any costs arising from any longer-term environmental consequences of the incident, the impact of the incident on our reputation and the resulting possible impact on our licence to operate. The provisions recognized in the income statement represent the current best estimates of expenditures required to settle certain present obligations that can be reliably estimated at the end of the reporting period, and there are future expenditures for which we currently cannot measure our obligations reliably. These uncertainties are likely to continue for a significant period. See Financial statements – Note 2.