| | Three months to | | |  |  | | December | September | December | % Change | % Change |  |  | | 1997 | 1997 | 1996 | Sep 97 | Dec 96 |  |  | | $M | $M | $M | to Dec 97 | to Dec 97 |  |  |  |  | Operating revenue | 4,485 | 4,301 | 3,976 | 4.3 | 12.8 |  |  |  | Interest income | 3,557 | 3,395 | 3,163 | 4.8 | 12.5 |  |  |  | Interest expense | 2,172 | 2,042 | 1,847 | 6.4 | 17.6 |  |  |  | Net interest income | 1,385 | 1,353 | 1,316 | 2.4 | 5.2 |  |  |  | Charge to provide for doubtful debts | 120 | 105 | 39 | 14.3 | large |  |  |  | Net interest income after provision for doubtful debts | 1,265 | 1,248 | 1,277 | 1.4 | (0.9) |  |  |  | Other operating income | 928 | 906 | 813 | 2.4 | 14.1 |  |  |  | Total operating income | 2,193 | 2,154 | 2,090 | 1.8 | 4.9 |  |  |  | Other operating expenses | 1,381 | 1,366 | 1,169 | 1.1 | 18.1 |  |  |  | Operating profit before abnormal items and tax | 812 | 788 | 921 | 3.0 | (11.8) |  |  |  | Abnormal gain (nil tax applicable) | - | - | - | - | - |  |  |  | Operating profit before tax | 812 | 788 | 921 | 3.0 | (11.8) |  |  |  | Income tax expense attributable to operating profit | 291 | 209 | 339 | 39.2 | (14.2) |  |  |  | Operating profit after income tax | 521 | 579 | 582 | (10.0) | (10.5) |  |  |  | Outside equity interests in operating profit after income tax | (1) | (1) | - | - | - |  |  |  | Operating profit after income tax attributable to members of the holding company | 522 | 580 | 582 | (10.0) | (10.3) |  |  |  | Profit Restated to Exclude Amortisation of Goodwill |  |  |  | Operating profit after tax, before outside equity interests and amortisation of goodwill | 558 | 615 | 617 | (9.3) | (9.6) |  |  |  | Outside equity interests | (1) | (1) | - | - | - |  |  |  | Operating profit after tax and outside equity interests before amortisation of goodwill | 559 | 616 | 617 | (9.3) | (9.4) |  |  |  | Earnings per Share |  |  |  | Basic earnings per share | 36.9c | 39.8c | 39.4c | (7.2) | (6.2) |  |  |  | Diluted earnings per share (1) | 36.1c | 38.8c | 38.8c | (7.0) | (7.0) |  |  |  | (1)Diluted earnings per share includes the impact of options, partly paid shares and the potential conversion of exchangeable capital units. |  | | | Results Highlights Review of Operations Consolidated Balance Sheet Consolidated Profit and Loss Download Results Announcement |