Whether you go for NTL for the phone or not, *don't* bother actually using NTL or BT for the calls!
Sign up to
http://www.call1899.com and
http://www.call18866.com and apart from paying a 2p or 3p connection fee you can get *FREE* local and national calls any time of the day or night and very often cheaper rates on any other type of call as well