For example this one is the cheapest package which says includes the phone line.
https://www.zen.co.uk/broadband/fast-broadband
But on another packages It says no phone line rental. I'm presuming they mean "copper phone line rental" ?!
It also does not specifically say that voice calls can be used with a landline phone as you would do normally.
In fact it mentions a " digital voice package" which I'm not sure if that is needed for is optional extras for the " landline phone"
https://www.zen.co.uk/phone/digital-voice#whatsincluded
EDIT:
"Digital voice is an additional £6 on your broadband bundle"
So 35 + 6 then = £41 a month


