E.ON agrees to buy Ovo in deal to create UK’s biggest energy supplier

Acquisition would result in combined company serving about 9.6 million customers if given regulatory approval

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The German energy group E.ON has agreed to buy struggling UK rival Ovo in a deal that would create Britain’s biggest gas and electricity supplier.

The combined company will serve about 9.6 million customers, overtaking the market leader, Octopus, which serves almost 8m households in the UK.