The London-listed company booked a profit for the period attributable to shareholders of $264m, up by 9.1% from $242m in the first half of 2012.
However the figures for the first half of this year do not include a further $158m in profit from selling non-core assets.
Adjusted earnings before income tax, depreciation and amortisation (ebitda) rose by 2.8% to $689m.
Total revenue dipped by 1.3%
