Your comment contradicts itself. You mention a bulk of FTTP connections then mention virgins DOCSIS. I’m assuming you’re talking about their Coaxial cables, if so it’s not FTTP in the first place it will be FTTC.
My understanding is their new fibre lays are all “symmetric ready”, same with BT. You’re right they currently don’t operate them in that fashion, but they’ve laid the groundwork. See below.
https://www.ispreview.co.uk/index.php/2022/11/first-trial-us...