Thanks for taking the time to respond, I do appreciate your time.
All of the local houses were built in the 70's 80's and all of the lines are underground, so I'm assuming they all had lines at least installed. There are several BT manholes, both large and small, dotted around, but I have no idea how these fit in, they have run 2 ducts into one which is about 4 metres away in the path, or even which one my line runs through. I'll see if I can trace the BDUK team at Suffolk County Council.
Again, thank you for your time.