I just realised that the buzzword was the Multicast DNS. I opened the virgin media page which attempts to solve this. It told me to remove any rules that may keep port 5353 open. I have no ports open for that number. Another point was this:
"Virgin Media Super Hub and Hub 3 include a DMZ option. This feature allows for a device using a specific local IP address on your home network (e.g. 192.168.0.2) to bypass your Firewall settings. This is occasionally necessary if you are using a device that has its own firewall configured. If you have a device configured in your firewall's DMZ that does not use its own firewall, it is crucial that you disable this option immediately."
I noticed that the IP for my PS4 had the DMZ enabled. Is that my issue? Do PS4s not have firewalls? I have disabled it.