on 12/10/2020, Peter Johnson supposed :
How are they doing it? Digging trenches or using existing ducts.
Google give lots of answers about this but nothing that I've found
about how it's actually being done.

Virgin did the whole village a few years ago, then struggled to sell
it. The used a narrow trench cutter machine, making a trench about 5"
wide, dropped the fibre in, leading to the boxes, then from the box to
the end of everyone's front garden, where the installed a small plastic
box. Where people subscribed, they ran from the box up the garden or
drive to the houses. They included a service to every bus stop too, for
the bus information displays.