Z Energy has a track record of beating its own forecasts.
Oil producers outside OPEC could co-operate on output caps.
Is Colombia's "Brexit" moment the end of its peace prospects? And will Opec's production cut lift oil prices again?
Z chief executive Mike Bennetts has a track record of under-promising and over-delivering. With special feature audio.
Z Energy is likely to reconfigure its petrol stations to best suit each of the two brands it owns.
McKinsey says world demand for oil as an energy source will stop rising as early as 2025. With special feature audio.
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