The Home::1 tariff originally had a complicated set of caveats for leaving the service within one year (paying for router, min term of 12 months on FTTC, and cease charges if ceasing).
We have decided to change this to a simple 6 month min term with no catches. This is a slight gamble for us, but we think it helps a lot to make this a simple tariff.
Obviously those customers that have signed up before this change can choose to stick to the previous arrangement instead if they want to leave.