I saw this ad and realised there were more options than BT and Sky and saw what BT were trying to do. They also offer sweetners to enable more customers to sign up. The true reality of BT services and products will cost a lot more in the future than many of the options available. BT offer Sky sports channels for free, for now, but watch in the future when you have to start paying for them.
I signed up with Plusnet and have a perfectly reliable service including fibre optic which is excellent and consistant.