Shell Energy is being investigated by the communications regulator for not telling customers that their broadband contracts were coming to an end.
Ofcom opened an investigation into whether the energy giant complied with its rules on communications with customers on Friday after Shell Energy contacted them about potential problems.
Under rules introduced a little over two years ago, providers of broadband, mobile, home phone and pay-TV have to warn their customers when their minimum contract period ends. They must also be told how much they could save if signing up to a new deal, and be reminded of the best deals every year.
