The Department of Energy and Climate Change said it is up to the energy companies to justify their profits.
A departmental spokesman said: "Profits are a matter for energy companies to justify to their customers and shareholders, but profits are needed if they are to continue to invest in Britain's energy security and infrastructure".
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The protected area, over six times the size of the UK, will protect marine wildlife and assist in scientific research.
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The NI High Court rejected a legal challenge to the EU referendum result that proposed granting MPs a vote on Article 50.