It would be nice if they are. I'm pushing 68 and am currently paying their outrageous £19 line rental. At least I'm getting good speeds and a reliable service most of the time (touching wood) which is more than many poor souls can say.
ETA: Ah, it seems it's only for those on phone only and does not include people like me who have broadband as well.
As my Broadband speed is nothing to write home about, the telephone line rental being exorbitant ( you also need to pay extra for call number monitoring) and the Tivo box almost always being "asleep" when I switch it on, I think it is time to source an alternative supplier.