Thank you. Being just a whisker off 80, you will allow that most of the white hot heat of internet/communications technology rolls straight over my head. So I only undertsnad the bare outline of what you are saying.
In fact, we have what is I believe, referred to as a hybrid exchange system - a Panasonic TEA308 - a remnant of the days when I ran a number of small businesses from offices in our home. I have been told that this will not connect in any way to a fibre system. This does not bother me as it has more than earned its keep, and I am quite prepared to throw it out and start again. We will not need an exchange system, but as this is a large building on two floors and two independant sets of stairs and both my wife and I are disabled, we will need several phones within easy reach.
The phone service, but not the exchange system, is provided by BT. I assume I will continue with them, when the FTTP service is offered. My internet services and hosting are provided by 123REG and UK2. How they will be involved, if at all, in the new set up I know not.
Thanks again for your kind help and if any of the above information leads you towards any further thoughts, I will be delighted to hear from you.