You may not even use a Landline but there is a chance that you are paying for it just to have Broadband. Ofcom has just launched it's investigation into Telephone providers such as Virgin Media, BT, The Post Office and more.
It worries that the competition is not working effectively as it should. The wholesale cost of Line Rental has actually declined year on year since 2010, however, the Line rental consumers are charged has increased, with some charging as much as £18.99 per month.
It's more a concern for customers who don't switch suppliers and Ofcom investigation are concerned customers are not getting value for money.