[APS]

These is a difference between the work VM will need to do and what BT will need to do though. For VM they will normally need to dig up pavements/roads to lay a fibre and power to a new cabinet and copper to each house. In the case of BT all they often have to do is pull a fibre down an existing duct to an existing cabinet, and then change the kit inside that cabinet. The wires to the houses are already there.

Sometimes the work goes a little beyond this if there are limitations in the existing duct or cabinet, e.g. power and space. In that case the work is often limited to the cabinet or its surrounds. I have heard that if there are duct problems they just skip the upgrade on the specific cabinet and the customers it serves, at least in the short term, leaving groups of people with no upgrade!