What is the cabling work you want/expect VM to do at the construction phase?
You seem to be expecting that VM will blow fibre all the way through to your comm's cupboard in your other topic
Full fibre rollout, old cables upgrade | Virgin Media Community - 5665009
but that is less likely to be VM's chosen method for future fibre connections.
Your idea to do as much wiring as possible during construction is sensible but VM is simply not set up to help you in the way you want.
From memory, when similar past topics like this have cropped up, the usual response from VM is that you have to place an order and VM will come and do the installation for you. If you are moving services you give VM your moving date and the same thing happens.
Where VM has done something along the lines you want, in past topics on here, a passing VM tech has provided some coax cable in advance or a local manager has agreed to provide some coax cable to pre-wire. These were just ad-hoc arrangements agreed on an individual basis.
For most VM installations in the past, a customer might need coax cable throughout the home to distribute TV and connect the broadband.
In the future VM world, the only thing VM is going to provide you with is a broadband connection from which other services will be provided. Internal coax cable will not be required, nor internal telephone cable.
The answer to your query at the moment is to provide a duct/conduit to take a VM connection from your external connection point through to your comm's cupboard as suggested on your earlier topic.
After that it will be your internal network that has to do the heavy lifting so flood wire your new home with ethernet cable and/or invest in some decent wi-fi equipment.
