It might be technically possible to carry a Sky service on redundant VM cables in your home but fairly doubtful any installer would want to do that. They would be relying on some legacy cabling which they have no information about to provide their new service. I would expect they would want to use their own new cabling, with a spec matched to their own service, so as to ensure it worked reliably and remove the possibility of being called back to any faults caused by someone else's cabling.
“The white cabling what is inside it and if the connectors were changed could they then be utilised by Ský or BT to transmit a signal from their supply box to their TV box/router thanks” do you mean for a TV connection or a broadband connection?
Tudor There are 10 types of people: those who understand binary and those who don't and F people out of 10 who do not understand hexadecimal c1a2a285948293859940d9a49385a2
Anything external from the Virgin Wall Socket is VM's own cable network. No other ISP can pump anything through the VM wall socket only VM can provide a signal through this wall socket.
But the coax cable left inside your home can be recycled/reused for personal use IF you disconnect it from the VM wall socket. Coax cable is simply high quality aerial wire and you can use it for hooking up a satellite dish to a freeSAT box, or a terrestrial aerial to a freeview set top box. I cant think of any other uses for coax cable.
The coaxial cables are not fibre optic. They cannot be used for FTTP FTTH. nor are they compatible with xDSL services. If you order services from any other ISP they will not be able to re-use the coaxial cables.