Millsy Nah ,they are planning on getting rid of it (DOCSIS), but at this time most of the network is still copper (coaxial) cable from your house to the cab on the street. From the cab onwards it’s fibre.
Granted Virgin’s last leg is better then BT’s “POTS” ADSL fibre to the cabinet network, but virgin are still using copper coax for the last leg until they upgrade everyone.