The others are right, but it may help you to know I am on PN FTTC with BT Retail phone line rental and calls.
Signing up now, you would end up paying more for the broadband that if you had PN Home Phone as well. But your phone stuff from Zen is (I think) far cheaper that PN Home Phone. You would also have a connection charge for the FTTC.
I'll leave you to do the sums

.
My broadband basic info/help site - www.robertos.me.uk |
Domains,website and mail hosting - Tsohost.
Connection - Plusnet UnLim Fibre (FTTC). Sync ~ 51.8/16.8Mbps @ 600m. -
BQM
"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.