Production costs Depreciation and amortisation of oil assets EBITDAX Underlying EPS Purchase of shares for employee share awards Adjustments for exploration expense Description of accounting policy for classification Description of accounting policy for recognition and measurement Description of accounting policy for share premium Description of accounting policy for accumulated loss Description of accounting policy for short-term benefits Disclosure of interest bearing loans and net cash Disclosure of oil price risk Disclosure of currency risk Disclosure of interest rate risk Disclosure of annual report